C-3500 True Composite windows and patio doors deliver the high-end appearance of contemporary wood windows, with more strength and durability than typical vinyl windows. C-3500's next-generation wood composite material requires no painting and is engineered to last with little maintenance. Slimmer sight lines mean more visible glass, more light, and better views.
- Contemporary luxury appearance, thanks to unobstructed sight lines and architecturally correct design 
- Mechanically fastened corners (no welds) offer a clean look that resembles high-end wood windows 
- A slimmer frame design delivers more visible glass, for more natural light and better views 
- Twice as rigid as vinyl, true composite material installs cleanly and resists warping and sagging over time 
- SunStable double-coated Low-E insulating glass for a balance of solar heat/light, indoor temperature stability, and protection against UV rays that's suitable for most climates 
- Features clear glass for an unobstructed view 
- Low maintenance, built-in color is scratch-resistant, won't flake or peel, and doesn't require painting 
- Insect screen included with window 
- Backed by a 10-Year Limited Warranty