We build in three systems: multi-chamber uPVC (best value, excellent insulation), thermally broken aluminum (slimmest sightlines, largest spans), and wood-clad aluminum (warm interior, weatherproof exterior — Custom Design). If you want maximum glass area, choose aluminum. If you want the lowest cost per opening, choose uPVC.

Every unit ships with a certified U-Factor and SHGC label. Our Low-E 366 package reaches U-0.27 and blocks roughly 95% of UV. Triple Pane Thermal reaches U-0.18 for northern climate zones.

Yes. Series X Essential is DP-40, Pro is DP-50, and Pro Max is DP-55 with a 150 mph design pressure rating. Coastal installs should use our marine-grade hardware finish, included on Pro Max.

Measure the rough opening width and height at three points each and use the smallest measurement. If your opening falls between sizes, submit a Custom Design request.

Essential is the value system: uPVC, double-pane, manual hardware. Pro moves to thermally broken aluminum with slim sightlines and Low-E standard. Pro Max adds premium thermal break, acoustic laminated glazing, larger spans, and highest pressure ratings.

Absolutely. Custom Design Series X covers any width and height, plus arched, trapezoid, and radius shapes. A specialist returns an engineered drawing and price within two business days.