The Window Man's exclusive double DeVac Thermo-Barrier design provides maximum air space for highest STC (Sound transmission class) in fully operating windows. Average decibel reduction up to 56 are obtainable in DeVAC acoustical windows glazed with monolithic glass.
DeVAC STC ratings compare to:
- STC 43-6" painted concrete block.
- STC 48-8" painted concrete block.
- STC 56-12" reinforced concrete wall.
Features for Thermo Barrier and Acoustical Windows:
- Primed Billet 6063-T6 Aluminum Extrusions are 45% stronger than T5 temper commonlu used in other aluminum windows.
- Bush Joint Frame and Sash corners with frame corner gaskets and internally sealed sash joints for tight attractive fit
- Wide Trapped Air Space of over 2" seperate interior and exterior glass surfaces to provide beneficial thermal and sound resistance.
- Hollow Tubular Sill with Weep valve system effectively drains water to the outside while reducing air infiltration and noise penetration.
- DeVAC Non-Structural "T in the Box" Thermo-Barrier with over 30 years of proven performance.
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