Kömmerling Xtrem 76 AD is the evolution of the popular 76 series, developed specifically for regions with high solar activity, such as Spain. The PVC composition includes special S-class stabilizers that prevent profile deformation under extreme heat. The system with 76 mm installation depth provides excellent insulation, keeping the inside of your home cool and reducing air conditioning costs.
Thin frames let in more Mediterranean light, and two circuits of high-quality sealing reliably protect against dust and noise. This is the "gold standard" for those seeking German quality adapted for the Spanish sun.
Technical Specifications
Details
A universal option for the Spanish sun. The special profile composition is not afraid of heat and does not yellow over time. This is the "golden mean" for those who need reliable German windows without overpaying for extra options.
System structural parameters:
- Xtrem technology: Special S-class PVC formula with increased titanium dioxide concentration for protection against harsh Spanish solar radiation.
- Installation depth: 76 mm.
- Profile construction: 5-chamber system providing optimal balance between weight and thermal insulation.
- Sealing system: Double-circuit (AD) with co-extruded seals resistant to drying in the sun.
- Design: Straight, clean profile lines matching modern Spanish architecture.
- Reinforcement: Enhanced steel section to compensate for thermal expansion when installing dark laminated windows.
Glazing and infill options:
- Maximum infill thickness: up to 50 mm.
- Optimal package: Allows installation of powerful double-chamber packages with selective glass (Guardian Sun) for overheating protection.
Maximum construction dimensions:
- Maximum sash height: up to 2400 mm (white) / 2300 mm (colored).
- Maximum sash width: up to 1500 mm.
Certified characteristics:
- Profile thermal insulation (Uf): 1.0 W/m²K.
- Water tightness: up to E2250.
- Air permeability: Class 4.
- Sound insulation: up to 46 dB.
- Wind resistance: up to C5.
- Burglar resistance: RC2.
Xtrem technology for hot climates
Protection from aggressive sun

More natural light in your home
Maximum light transmission

Reinforced steel reinforcement
Structural stability

Kömmerling Xtrem 76 AD
A universal option for the Spanish sun. The special profile composition is not afraid of heat and does not yellow over time. This is the "golden mean" for those who need reliable German windows without overpaying for extra options.
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More detailsDon't Forget to Add
Additional elements and accessories that will make your home even more comfortable
Mosquito Nets
Handles and Locking Elements
Lamination
Decorative Elements
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We work throughout Spain
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FAQs
Frequently Asked Questions about Kömmerling Xtrem 76 AD
What exactly does the Xtrem marking mean for the Spanish climate?
The Xtrem marking confirms that the profile has been certified for use in regions with extremely high solar radiation levels (class S according to international standards). Special modifiers are added to the PVC composition to prevent yellowing and brittleness of plastic under intense ultraviolet radiation typical of the Costa Blanca and southern Spain.
How does the 76 AD system differ from standard 70 mm profiles?
The increased depth to 76 mm allows the use of wider and warmer glazing units up to 50 mm. In addition, the 5-chamber structure of 76 AD is designed according to the principle of optimal isotherm distribution, making the window 25% more efficient than old systems while maintaining a thin and elegant profile appearance.
How does this window handle urban noise?
Kömmerling Xtrem 76 AD combined with a quality acoustic glazing unit provides noise reduction up to 47 dB. This means that busy street sounds or passing traffic will be perceived indoors as barely audible whisper, creating an ideal atmosphere for rest or work.
Why do they say it becomes brighter in the house with these windows?
Kömmerling engineers minimized the visible width of the frame-sash combination to 116 mm. This allows increasing the transparent part (glazing unit) area. You get 5-10% more natural sunlight in the room compared to standard wide PVC profiles, which visually expands the space.
How airtight is the system in strong wind and rain?
The 76 AD system is equipped with two circuits of high-quality EPDM seal that maintains elasticity for decades. The window has the highest Class 4 air permeability and Class 9A water tightness, guaranteeing no drafts or leaks even during severe coastal storms.
What color options are available for this model?
Over 50 lamination options are available for Xtrem 76 AD: from classic wood textures to modern metallic shades. Thanks to UV-resistant film, the color does not fade in the sun, and proCoverTec technology allows ordering windows with a unique matte surface that is pleasant to touch and resistant to dirt.



















