Low Profile U-LP Acoustical STC-40 Heat and Smoke Vent (Model No. ULP-STC-40)

• Superior protection against sound penetration
• Top cover stops sound with two layers of 2' insulation, a dead air space and an acoustical barrier
• 2" insulation and acoustical barrier around entire frame perimeter
• Acoustical gasket entire frame perimeter stops sound leaks
• STC (sound transmission coefficient) of 40 when tested by ASTM E90 (90).  The higher the STC, the better the sound blocking
• 5', 5-1/2' and 6' widths
• Lengths from 6' to 12'