About Clear Glass

Masonite glass goes beyond a brilliant view. The glass in our doors is secured with  warm-edge flexible spacers, providing clearer views, better sound reduction, superior durability and greater energy savings. 

Clear. Quiet. Energy-Efficient.

The glass used in doors appears to be a single piece, but it’s actually two sheets connected with a spacer. While other manufacturers use failure-prone metal spacers, we employ warm-edge, non-metal spacers built to withstand the elements—and the test of time.

WARM-EDGE
FLEXIBLE SPACERS
FULL METAL 
SPACERS

Warm-edge flexible spacers move as glass bows in or outward, providing superior performance for years to come.

Rigid full metal spacers are unresponsive to glass-bowing, resulting in seal failures.

SPACER SYSTEM CONDENSATION
RESISTANT
EDGE OF GLASS
TEMPERATURE
EFFECTIVE THERMAL
CONDUCTIVITY
EFFECTIVE IGU
CONDUCTIVITY
WARM-EDGE FLEXIBLE SPACER 43.9 38.1 ˚F / 3.39 ˚C 0.182 W/m•C 0.265
Stainless Steel U-channel /butyl 38 35.1 ˚F / 1.72 ˚C 0.333 W/m•C 0.269
Stainless box / PIB primary sealant 36 33.6 ˚F / 0.89 ˚C 0.365 W/m•C 0.271
Tin U-channel / butyl 27.3 29.5 ˚F / -1.39 ˚C 0.806 W/m•C 0.278
Aluminium spacer / Silicone 19.6 23.7 ˚F /-4.61 ˚C 1.623 W/m•C 0.296
Simulations were completed using WINDOW 7.4 / THERM 7.4 as per NFRC 2000-2014. Otside temperature 0F, inside temperature 70 ˚F

Warm-Edge Spacer Benefits

Clear, Brilliant Views

Reduce Condensation and Help Prevent Fog

Greater Sound Reduction

Ensure Sound Stays In and Noise Stays Out

9X More Durable

Proven to Outlast Aluminum or Silicone Spacers

Greater Energy Savings

Reduce Heat Loss by Up to 14°F

Available Glass Cutouts

Full Lite

Full Lite Oval

3/4 Lite Rectangle

1/2 Lite Square

1/2 Lite Camber

Craftsman Lite

1/4 Fan Lite