04 — Specialist
NL System.
Traditional aesthetics met with advanced thermal innovation. NL System is tailored for Dutch heritage and demanding North Sea standards — deep-block rebated frames with specialist detailing.
Request specificationsNL System Engineering
Core specs. No fluff.
Block-rebate frames, North Sea climate detailing and Dutch heritage geometry — the engineering that carries every NL System.
Block Rebate
Deep-block rebated frames engineered for Dutch detailing — traditional aesthetics with a contemporary thermal core.
—Block rebate
North Sea Climate
Specified for demanding coastal and North Sea conditions — weather tightness and durability where the climate does not forgive.
—North Sea
Triple-Gasket Sealing
Three sealing levels, including cornice-ready NL geometry, deliver draft resistance and acoustic isolation for specialist Dutch openings.
—3 gaskets
NL 8500 Construction
The NL 8500 system depth locks in structural stability and thermal performance inside a sleek contemporary profile for minimalist façades.
—NL 8500
Technical Documentation
Need the full specification set?
Request NL System technical data, profile drawings and system details for Dutch and specialist projects.
NL System / Surface Collection
Seven finishes. One architectural signature.
Colour should not simply sit on a window. It should belong to the architecture. Explore a curated palette spanning pure white, contemporary monochromes and tactile woodgrain finishes.
Screen representation may differ from the physical finish. Final colour selection should be confirmed using an official Alvion material sample.
Performance from every angle.
A profile system is more than its visible surface. Explore the structural intelligence behind the NL System — from deep-block rebate geometry to North Sea weather detailing engineered for Dutch heritage projects.
Verified Performance
Quality and certified.
Alvion profiles are engineered to meet rigorous European standards. Every system carries the CE marking and is tested at IFT Rosenheim — one of Europe’s leading institutes for window and facade technology.
Contact Alvion
