 Thermal barrier in sash and frame minimizes cold transfer and virtually eliminates condensation on window.
Sealed air space is one of the best insulators known. That's why double glaze windows help save energy. The Model 600 has a 5/8" sealed unit.
Lowest infiltration of any operating window. Greatly exceeds industry standard of .375 CPM.
Weep hole covers are hinged to keep out air and insects. The harder the wind blows, the tighter the seal.
Improved heavy duty roller housing with wide replaceable bronze roller assures ease of window operation.
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Heavy-duty latch tightly secures window, greatly increasing security and resisting forced entry.
Mylar fin and pile weather-stripping with heavy duty aluminum interlock minimizes air infiltration for the tightest possible seal.
Sturdy "H" mullions are available to join together multiple window units in modern building designs.
Full wrap-around weather-stripping in glazing channel cushions glass and virtually seals out elements.
Single Vents are reversible on the job site.
Cord and pulley on single-hung windows hold window in any position.
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