Hurd Millwork promises new high-efficiency windows with better performance and lower price than current mid-priced, low-e windows. The promises are based on two new window products tuned to different climatic needs. Both windows contain Southwall's Heat Mirror plastic film suspended inside an insulated glazing unit. This creates two chambers filled with inert gas.

Heat Mirror TC-88 offers high insulating value (R-value 6.3 center-of-glass) and high shading coefficient (SC = 0.59). Shading coefficient describes the amount of solar heat that passes through the window. Higher numbers mean more heat can penetrate. (See October 1994 for a complete description of glazing performance.) This window would be appropriate for northern climates where solar heat gain is beneficial. TC stands for twin coat, meaning that low-e coatings have been applied to both sides of the film.

Sunbelter SC-75 targets warmer climates and west-facing applications where solar heat gain can be excessive. The shading coefficient is 0.41. (SC in the brand name refers to "Solar Control.") It also offers a respectable insulating value (R-5.3), although slightly lower than the TC-88. Hurd's windows also employ warm edge spacers and wood frames with exterior aluminum cladding.

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Hurd Windows