Fixed
Does not open: provides light and views without a moving sash. It works alongside an opening section. Plan how the room will be ventilated and how the outer glass can be reached for cleaning.
J+K UNIS · made to measure
PVC windows
Made-to-measure PVC windows for renovation and new homes. Compare 11 profile systems and choose the layout, opening types, glazing and finish for your project.
Illustrative product image
PVC windows
Made-to-measure PVC windows for renovation and new homes. Compare 11 profile systems and choose the layout, opening types, glazing and finish for your project.
- 11 systems across the IDEAL, NEO and energeto ranges
- 1, 2 or 3 sections with individually selected opening types
- Double and triple glazing, with privacy and safety options
- White or decorative finishes to suit the chosen frame
How should the window open?
Set each section separately. Left and right hinges are specified when viewed from inside; fixed-only profile variants cannot open.
Turn
The sash swings sideways into the room. Useful for full opening and brief, wide-open ventilation. Check that furniture, curtains and objects on the sill will not obstruct it.
Tilt
The top of the sash tilts inwards for ventilation. This version does not swing fully open; consider this if you need access through the window or easy cleaning of the outer glass.
Tilt and turn
One sash combines sideways opening with a tilt position. Choose it when you want both ventilation options. Leave clear space in front of the window for full opening.
One, two or three sections?
Each section can be fixed or opening. Choose the layout to suit the façade, ventilation needs and easy access.
One section
An uninterrupted layout with no vertical division. Choose a fixed or opening version; for an opening sash, allow space in front of the window and easy reach to the handle. Permitted dimensions depend on the construction.
Two sections
Combine a fixed section with an opening one, or choose opening types for both. Their widths can be equal or different, but must add up to the overall window width.
Three sections
More flexibility to place opening sections where they are easy to use. For example, choose a fixed centre with opening sections on either side. The preview shows the layout and individual widths.
Specifications
Parameters depend on configuration; the quotation will confirm the exact specification.
What do the specification numbers mean?
Compare like-for-like values. U-values are given in W/(m²·K): lower numbers mean less heat transfer under the same conditions.
Uf — the frame profile
Describes heat transfer through the frame and sash profiles. It helps compare profile systems but does not, on its own, describe the glazing or the completed window.
Ug — the glazing
Describes heat transfer through the central area of the glazing. It depends on the unit’s composition, coatings and cavity fill. The listed value belongs to the specific glazing unit selected.
Uw — the whole window
Includes the frame, glass and glazing edge. Window size and layout also matter. A catalogue example is not a calculation for your window; compare quotes using Uw for the actual specification.
Installation depth
The profile dimension from outside to inside. It matters for the installation detail and fit within the opening. It is different from the visible frame width or the glazing thickness.
Chambers and seals
Chambers are cavities inside the profile; seals form its sealing levels. These are construction features, not quality ratings on their own. Compare them alongside Uf, available glazing and the opening type you need.
Glass for warmth, daylight and privacy
Choose the construction and features you need, then select a specific unit from the list. Glazing cavities and profile chambers are different specifications.
Double glazing
Two panes with one sealed cavity between them. Compare the Ug value and thickness of available units: their thermal properties depend on the specific composition.
Triple glazing
Three panes with two cavities. These units have lower Ug values than double glazing in this catalogue. Choose a compatible profile system and consider the required glazing thickness and weight.
Laminated glass
Glass layers are bonded by an interlayer that retains most fragments after breakage. Look for units marked VSG, 44.2 or 66.2 in the list. Performance depends on the specific composition.
Patterned glass
The pattern obscures a clear view while allowing light through. Useful in rooms where privacy matters. The degree of transparency depends on the pattern, so compare samples before choosing.
Not sure yet?
Choose help with selection and describe the room: whether it is heated, which way the windows face, and any concerns about sun or street noise. This helps identify a suitable glass composition.
NEO PRIME
- Installation depth
- 76 mm
NEO ADVANCE
- Installation depth
- 85 mm
- Glazing thickness
- up to 54 mm
NEO VIEW
- Available variants
- The catalogue includes several frame variants. Installation depth is confirmed for the specific frame you choose.
IDEAL NEO
- Available variants
- Seals and reinforcement depend on the specific frame and sash variant.
energeto NEO
- Installation depth
- 76 mm
- Available variants
- Seals and reinforcement depend on the specific frame and sash variant.
IDEAL 8000
- Installation depth
- 85 mm
- Profile chambers
- 6
- Sealing levels
- 3
- Glazing thickness
- up to 51 mm
energeto 8000
- Installation depth
- 85 mm
- Profile chambers
- 6
- Sealing levels
- 3
- Glazing thickness
- up to 51 mm
IDEAL 4000
- Installation depth
- 70 mm
- Profile chambers
- 5
- Sealing levels
- 2
- Glazing thickness
- up to 41 mm
energeto 4000
- Installation depth
- 70 mm
- Profile chambers
- 6
- Glazing thickness
- up to 41 mm
IDEAL 5000
- Installation depth
- 70 mm
- Profile chambers
- 5
- Sealing levels
- 3
- Glazing thickness
- up to 41 mm
IDEAL 7000
- Installation depth
- 85 mm
- Profile chambers
- 6
- Sealing levels
- 2
- Glazing thickness
- up to 51 mm
- Available variants
- This system is available only for fixed windows in the current catalogue.
Options
NEO PRIMEProfile details
Profile specifications
NEO PRIME
A 76 mm system with slim visible profiles and modern geometry. The catalogue offers straight, rounded and offset sash designs to suit the facade.
- Installation depth
- 76 mm
Profile benefits
- 76 mm installation depth; the appearance depends on the frame and sash combination.
- Straight, rounded and offset sashes give the profile section different shapes.
- The current catalogue includes opening variants and a separate fixed-glazing frame.
How to choose: Compare with Neo Advance for an 85 mm frame, or NEO View when a concealed sash is the main design priority.
Technical specifications
- Installation depth
- 76 mm
Chamber count, seals and permitted glazing are confirmed for the specific frame and sash. The Prime name alone does not define every specification.
Specifications depend on the frame, sash and equipment. Availability and final properties are confirmed with the quotation.
NEO ADVANCEProfile details
Profile specifications
NEO ADVANCE
Our catalogue offers Neo Advance with an 85 mm frame. Pronounced overlaps and a characteristic 15° bevel give it a more traditional profile shape, while different sashes allow alternative window designs.
- Installation depth
- 85 mm
- Glazing thickness
- up to 54 mm
Profile benefits
- The listed version has an 85 mm depth and a glazing reference of up to 54 mm.
- The 15° bevel distinguishes its geometry from the straighter Neo Prime design.
- The catalogue includes Advance, Prime and View sash combinations, plus a fixed-glazing frame.
How to choose: Consider Advance for a deeper frame with a choice of sash shapes; compare its section and facade appearance with Neo Prime.
Technical specifications
- Installation depth
- 85 mm
- Glazing thickness
- up to 54 mm
85 mm refers to the frame offered here. Glazing capacity, chambers and seals depend on the combination; 54 mm is not guaranteed for every sash.
Specifications depend on the frame, sash and equipment. Availability and final properties are confirmed with the quotation.
NEO VIEWProfile details
Profile specifications
NEO VIEW
A concealed-sash system: the frame covers the sash from the outside, creating a restrained appearance with more visible glass. It suits facades with clean, simple lines.
Profile benefits
- The sash concealed behind the frame reduces the visible profile width.
- The permissible glazing thickness depends on the specific configuration.
- The current catalogue includes several frame variants with different geometry.
How to choose: Compare the visible frame and sash width with Neo Prime. For an Advance frame with a View sash, also check the corresponding Neo Advance variant.
Technical specifications
Specifications are confirmed for the selected configuration.
Glazing thickness and installation depth will be confirmed for the selected frame and sash.
Specifications depend on the frame, sash and equipment. Availability and final properties are confirmed with the quotation.
IDEAL NEOProfile details
Profile specifications
IDEAL NEO
Modern neo-platform geometry with clean frame and sash lines. This catalogue groups several variants under the name, so the final specifications depend on the selected construction.
Profile benefits
- Simple profile geometry helps the window suit a modern facade.
- The current window catalogue contains two IDEAL NEO frame variants.
- Depth, reinforcement, seals and glazing are confirmed after the variant is selected.
How to choose: Compare its geometry with Neo Prime and energeto NEO. Choose using the actual section, opening method and glazing requirements.
Technical specifications
Specifications are confirmed for the selected configuration.
Not every family specification is confirmed for the entries in this catalogue. A single chamber or seal count is therefore not assigned to all IDEAL NEO variants.
Specifications depend on the frame, sash and equipment. Availability and final properties are confirmed with the quotation.
energeto NEOProfile details
Profile specifications
energeto NEO
A 76 mm system with slim profiles and simple lines. Different sash and reinforcement options allow the window's appearance and construction to suit the project.
- Installation depth
- 76 mm
Profile benefits
- 76 mm installation depth is combined with different frame and sash variants.
- The catalogue includes composite-reinforced variants and different sash geometries.
- Available frames include a white-only version as well as separate alternative variants.
How to choose: Compare reinforcement and sash shape with IDEAL NEO; compare the 76 or 85 mm frame depth and required glazing with energeto 8000.
Technical specifications
- Installation depth
- 76 mm
Reinforcement, bonded glazing, colours and maximum glazing thickness depend on the variant. Not every technology is included in every configuration.
Specifications depend on the frame, sash and equipment. Availability and final properties are confirmed with the quotation.
IDEAL 8000Profile details
Profile specifications
IDEAL 8000
An 85 mm, six-chamber system with three sealing levels. The centre seal separates the hardware area from the outer rebate; the system supports glazing up to 51 mm.
- Installation depth
- 85 mm
- Profile chambers
- 6
- Sealing levels
- 3
- Glazing thickness
- up to 51 mm
Profile benefits
- 85 mm depth, six chambers and three sealing levels.
- Glazing up to 51 mm allows different glass-unit compositions, subject to compatibility.
- Bonded glazing is possible in suitable versions and is checked when specifying the construction.
How to choose: Compare with IDEAL 7000: both are 85 mm deep, but IDEAL 8000 has a centre seal and catalogue frames for opening windows.
Technical specifications
- Installation depth
- 85 mm
- Profile chambers
- 6
- Sealing levels
- 3
- Glazing thickness
- up to 51 mm
51 mm is a system limit, not the default glass-unit thickness. Reinforcement, dimensions and bonding options are determined for the selected frame and sash.
Specifications depend on the frame, sash and equipment. Availability and final properties are confirmed with the quotation.
energeto 8000Profile details
Profile specifications
energeto 8000
An 85 mm, six-chamber system with a centre seal. Composite reinforcement and bonded glazing are characteristic technologies of the range; the version is selected for the frame, dimensions and colour.
- Installation depth
- 85 mm
- Profile chambers
- 6
- Sealing levels
- 3
- Glazing thickness
- up to 51 mm
Profile benefits
- 85 mm depth, six chambers, three sealing levels and glazing up to 51 mm.
- Composite elements and bonded glazing distinguish it from conventional steel-reinforced versions.
- The current catalogue includes white-only frames and a separate composite-reinforced variant.
How to choose: Compare reinforcement and glazing methods with IDEAL 8000; compare the 85 versus 70 mm depth and glazing capacity with energeto 4000.
Technical specifications
- Installation depth
- 85 mm
- Profile chambers
- 6
- Sealing levels
- 3
- Glazing thickness
- up to 51 mm
Foam-filled chambers are a separate option, not a feature of every energeto 8000 window. Colour, reinforcement and equipment are confirmed for the selected variant.
Specifications depend on the frame, sash and equipment. Availability and final properties are confirmed with the quotation.
IDEAL 4000Profile details
Profile specifications
IDEAL 4000
A classic 70 mm, five-chamber system with two sealing levels. Its compact section and choice of sash shapes make it a useful option to compare when replacing older windows.
- Installation depth
- 70 mm
- Profile chambers
- 5
- Sealing levels
- 2
- Glazing thickness
- up to 41 mm
Profile benefits
- The listed version has a 70 mm depth, five chambers and two sealing levels.
- The system supports glazing up to 41 mm; the actual glass composition is chosen separately.
- Different sash shapes are available; suitability for an opening depends on dimensions and installation details.
How to choose: Compare with IDEAL 5000 for a centre seal at the same 70 mm depth, or with energeto 4000 for its reinforcement technology.
Technical specifications
- Installation depth
- 70 mm
- Profile chambers
- 5
- Sealing levels
- 2
- Glazing thickness
- up to 41 mm
These specifications describe the basic version in our catalogue. Other family variants may differ; a 70 mm depth alone does not guarantee compatibility with an old frame.
Specifications depend on the frame, sash and equipment. Availability and final properties are confirmed with the quotation.
energeto 4000Profile details
Profile specifications
energeto 4000
A compact 70 mm, six-chamber system for window replacement and refurbishment. Composite reinforcement and bonded glazing are characteristic parts of its construction.
- Installation depth
- 70 mm
- Profile chambers
- 6
- Glazing thickness
- up to 41 mm
Profile benefits
- 70 mm depth, six chambers and glazing up to 41 mm.
- The system uses composite elements and bonded glazing so the profile and glass unit work together.
- The current window catalogue has one frame variant in this range, available in white only.
How to choose: Compare reinforcement and chamber count with IDEAL 4000 at the same 70 mm depth; consider energeto 8000 for a deeper frame.
Technical specifications
- Installation depth
- 70 mm
- Profile chambers
- 6
- Glazing thickness
- up to 41 mm
The white-only restriction applies to the current catalogue offer. Glazing and additional options are checked for this version; a seal count is not stated here.
Specifications depend on the frame, sash and equipment. Availability and final properties are confirmed with the quotation.
IDEAL 5000Profile details
Profile specifications
IDEAL 5000
A 70 mm, five-chamber system with three sealing levels. It combines a compact profile with a centre seal that separates the inner rebate area.
- Installation depth
- 70 mm
- Profile chambers
- 5
- Sealing levels
- 3
- Glazing thickness
- up to 41 mm
Profile benefits
- 70 mm installation depth and a five-chamber profile construction.
- Three sealing levels, including a centre seal, distinguish it from IDEAL 4000.
- The system supports glazing up to 41 mm and offers several profile shapes.
How to choose: Compare seals with IDEAL 4000 at the same depth; compare with IDEAL 8000 if you need an 85 mm depth and glazing thicker than 41 mm.
Technical specifications
- Installation depth
- 70 mm
- Profile chambers
- 5
- Sealing levels
- 3
- Glazing thickness
- up to 41 mm
A centre seal alone does not determine the performance of a complete window. Geometry, reinforcement, glazing and dimensions are selected for the actual construction.
Specifications depend on the frame, sash and equipment. Availability and final properties are confirmed with the quotation.
IDEAL 7000Profile details
Profile specifications
IDEAL 7000
An 85 mm, six-chamber system with two sealing levels and glazing capacity up to 51 mm. Our current window catalogue offers it only as a fixed construction.
- Installation depth
- 85 mm
- Profile chambers
- 6
- Sealing levels
- 2
- Glazing thickness
- up to 51 mm
Profile benefits
- 85 mm depth and six chambers with two sealing levels.
- Glazing thickness up to 51 mm is permitted when compatible with the selected frame.
- The available frame is for a fixed window; opening is unavailable for this catalogue entry.
How to choose: Consider it for a fixed section of a window arrangement. For opening sashes or a centre seal, compare the available IDEAL 8000 frames.
Technical specifications
- Installation depth
- 85 mm
- Profile chambers
- 6
- Sealing levels
- 2
- Glazing thickness
- up to 51 mm
The fixed-only restriction belongs to the current catalogue, not the entire IDEAL 7000 family. Other versions require a separate availability check.
Specifications depend on the frame, sash and equipment. Availability and final properties are confirmed with the quotation.
Care
Use gentle cleaning products. Maintain hardware, seals and drainage openings according to the manufacturer's instructions. Contact us for adjustment or repairs.
Coordinate the façade and interior
Choose which side receives the finish to set the outside and inside appearance. Compare the colour with the façade, sills, handles and flooring.
White on both sides
A light, neutral option for both the façade and room. Useful when you want a discreet frame that can work with different wall colours.
Exterior finish, white inside
The chosen finish faces the façade while the room-facing surface stays white. Coordinate the outside with the house and keep a light frame in the interior.
Matching finish on both sides
The selected colour or texture appears outside and inside. Consider it alongside furniture and flooring, as the internal frame becomes a more visible part of the room’s design.
Preview and sample
Switch between outside and inside views to check the selected sides. On-screen colour is approximate; assess the shade, sheen and texture using a physical sample in daylight.
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J+K UNIS
Window questions answered
Practical answers before configuring and measuring.
Where should I start when choosing a profile?
Establish the dimensions, opening type and glazing requirements. Then compare installation depth, available frame variants and thermal values. A higher chamber count alone does not determine which window best suits your room.
Which dimensions should I enter?
Enter the product width and height in millimetres; individual section widths must add up to the overall width. Prepare a labelled sketch showing exactly what was measured. If you only have opening dimensions, the final product dimensions and installation clearances need to be established during the site survey.
Can I combine fixed and opening sections?
Yes. In two- and three-section windows, each section has its own opening setting. Place opening sections where the handle is easy to reach and ventilation is convenient. Plan access for cleaning fixed glass; profile variants marked fixed-only do not support opening.
Do I always need triple glazing?
Consider the building’s requirements, the Ug value and profile compatibility. Triple units in this catalogue have lower Ug values, but daylight, solar control and sound reduction also depend on the particular glass composition. Describe your priorities if you would like help choosing.
Can the window be dark outside and white inside?
Yes: choose an exterior finish with a white interior. The other available option is the same finish on both sides. Switch the preview side to check your selection, and compare the colour with a sample before ordering.
What should I prepare for a detailed quote?
Dimensions or a labelled sketch, the number of windows, photos of the openings, and the layout and opening types viewed from inside. Include preferences for colour, privacy, sun and noise, plus any requirements for removal, installation, sills and finishing around the opening.