Model SBI-445
Galvannealed Steel Louver
4" Deep - 45 Degree J-Blade BD-Intake
The SBI-445 combination louver features stationary louver blades and an integral gravity operated backdraft 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.
Standard Construction
Material: Galvannealed steel.
Frames: 4" deep x 20 ga. thick (102 x 1) channel.
Blades: 45o x 20 ga. (1) thick J-style BD intake.
Screen: 1/2" x 0.063" (12.7 x 1.6) expanded and flattened aluminum.
Mullion: Visible.
Minimum Size: 12" x 12" (305 x 305)
Maximum Size:
Single Section: 36" x 96" (914 x 2438)
Multiple Section: Unlimited
Ratings
Free Area: 7.5 ft2 (0.70 m2)
Performance @ Beginning Point of Water Penetration
Free Area Velocity: 775 fpm (3.94 m/s)
Air Volume Delivered: 5813 cfm (2.75 m3/s)
Pressure Loss: 0.14 in. wg. (35 Pa)
Velocity @ 0.15 in. wg. Pressure Loss: 811 fpm (4.12 m/s)
Design Load: 30 psf
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