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 |
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
