KVM Tools 4C556 12 in Backdraft Damper / Wall Shutter, 12-1/2 in x 12-1/2 in G4777902 Perforated Yes

Perforated Yes

UL 248-14 Guide JDYX

Return Port 1/4 in NPTF

Battery Size 3

5mm Stereo Jack Band Material - Hearing Protection Textile Compatible Mfg

KVM Tools 4C556 12 in Backdraft Damper / Wall Shutter, 12-1/2 in x 12-1/2 in G4777902 Perforated Yes15 In. H W 5. 75 In. L Aluminum Backdraft Damper, Damper Application Backdraft, For Nominal Duct Diameter Not Applicable, Frame Material Aluminum, Number of Panels 1, Maximum Air Velocity 2500 fpm, Overall Height 15 in, Rough Opening Diameter 12 1 2 in, Rough Opening Shape Square, Fits Fan Diameter 12 in, For Duct Shape Not Applicable, Free Area 0. 8 sq ft, Overall Width 15 in, Frame Material Thickness 0. 8 in, Overall Length 5 3 4 in, Connection Type