Southwall Hits R20

Southwall Technologies Inc. recently launched a new insulating glass line, the Heat Mirror “Quad-Cavity” R20 insulating glass unit (IGU). Company officials say this achieves a 0.05 center of glass U-factor (R20 insulating value) at the same weight as standard dual-pane IGU.

The Quad-Cavity R20 product suspends three lightweight Heat Mirror films within the IGU, creating four independent and super-insulating airspaces. The IGU is configured in an 1-3/4-inch overall thickness with Krypton gas filling and low-E coatings on the second and tenth glass surfaces.

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