On-Line Catalog : Louvers > Formed Metal Louvers > Combination Louver > SBI-445
Model SBI-445 galvannealed steel louver
4" deep • 45° J-Blade — BD-intake
The SBI-445 combination louver features stationary louver blades and an integral gravity operated backadraft damper to protect intake air openings in exterior walls. The SBI-445 is available in a wide array of painted finishes including custom color matching.