AluNext is the latest hybrid system replacing the outdated Unity solutions. 100% recycled PVC is combined with aluminum, uniting the advantages of both materials. You get the flawless appearance of a premium aluminum window with its sharp corners and matte textures, but with the thermal physics of the best plastic profile.
This is an eco-friendly solution, fully recyclable, that meets the strictest requirements of modern architecture. AluNext is the window of the future for those building exclusive real estate in Spain.
Technical Specifications
Details
A window that is indistinguishable from premium aluminum on the outside, while maintaining the warmth and comfort of plastic inside. A very strong system — designed for large panoramic windows that will not deform from heat.
System structural parameters:
- Innovative technology: Structural hybrid of aluminum and PVC. Aluminum is integrated into the profile, providing unprecedented rigidity without thermal bridges.
- Design: Full Aluminum Look. Flawless 90° corner joints and matte architectural coatings.
- Environmental friendliness: 100% recyclable. Rejection of adhesive joints in favor of mechanical material connections.
- Sealing system: Triple circuit of high-quality EPDM.
Glazing and infill options:
- Maximum infill thickness: up to 56 mm.
- Features: Ideal for large panoramic sashes.
Maximum construction dimensions:
- Maximum sash height: up to 2600 mm.
- Maximum sash width: up to 1600 mm.
Certified characteristics:
- Profile thermal insulation (Uf): 1.0 W/m²K.
- Water tightness: 9A.
- Air permeability: Class 4.
- Sound insulation: up to 45 dB.
- Wind resistance: Up to C5.
- Burglar resistance: RC2.
Premium appearance
Flawless aluminum aesthetics

PVC comfort in aluminum appearance
High-level thermal physics

For panoramic glazing
Structural power

Kömmerling AluNext MD
A window that is indistinguishable from premium aluminum on the outside, while maintaining the warmth and comfort of plastic inside. A very strong system — designed for large panoramic windows that will not deform from heat.
More Ideas and Inspiration
These are some examples of our work with Kömmerling AluNext MD profile. All this inspiration is for you and only for you.
We are working on keeping data up-to-date. Contact us if you need fresh materials.
Financing Options
Enjoy your purchase now and pay for it in installments using our financing services.
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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Available in Your Region
We work throughout Spain
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FAQs
Frequently Asked Questions about Kömmerling AluNext MD
How does AluNext differ from regular PVC windows with aluminum cladding?
AluNext is not just plastic with an overlay, but a structural hybrid. Aluminum and PVC are rigidly bonded during the profile manufacturing stage. This gives the system incredible strength and the aesthetics of a full aluminum window (straight 90° corners, matte textures) while retaining the warmth and tightness of the best plastic profile.
Can AluNext be used for tall panoramic glazing?
This is one of the main strengths of the system. Thanks to the rigidity of the aluminum component, AluNext allows manufacturing sashes up to 2.6 meters high. This makes the system an ideal replacement for "cold" aluminum in panoramic villa projects where huge light openings are required without heat loss.
How does AluNext behave under direct sunlight in Spain?
The aluminum outer layer takes on all thermal loads. Unlike regular PVC, which can expand when heated, the hybrid structure of AluNext maintains dimensional stability even in dark colors (black, anthracite) at surface temperatures up to +80°C. The windows don't warp and always close perfectly.
Is this system environmentally friendly?
Yes, AluNext was developed within the Circular Economy concept. All profile materials are easily separated and fully recyclable. Recycled PVC and aluminum are used in production, reducing your home's carbon footprint without compromising structural quality.
Why are architects increasingly choosing AluNext over pure aluminum?
The main reason is the elimination of "thermal bridges" and condensation. AluNext offers the same premium aesthetics with sharp edges and RAL colors as aluminum, but its thermal insulation coefficient is 2-3 times better. This allows building homes with huge windows that meet the strictest energy efficiency standards.
How durable is the coating on the aluminum part?
The aluminum profile is painted using powder coating or anodizing. This provides virtually a lifetime guarantee on color. The coating doesn't fade, peel, or scratch, and is resistant to aggressive sea salt exposure, making AluNext an ideal property investment.

















