Grade 18-8
Overall Length 48 in
AC Frequency Response 36 KHz to 42 KHz
The high-efficiency stainless steel finger valves in the air compressor are efficient and easy to maintain
Smooth Shank
KVM Tools 4C556 12 in Backdraft Damper / Wall Shutter, 12-1/2 in x 12-1/2 in 10D912 Grade 18-815 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