DAYTON 3HHL6 Backdraft Damper,Vert/Horiz Mtg,19 3/4Sq 3HHL6

Specifications

19.8 In.H-W 4.5 In.L Alu Spring Bkdrft Dampr, Damper Application Backdraft, For Nominal Duct Diameter 20 in, Frame Material Galvanized Steel, Number of Panels 1, Maximum Air Velocity 2000 fpm, Overall Height 19 3/4 in, Rough Opening Diameter 20 in, Rough Opening Shape Square, Fits Fan Diameter 20 in, For Duct Shape Square, Free Area 2.5 sq ft, Overall Width 19 3/4 in, Frame Material Thickness 20 ga, Overall Length 4 1/2 in, Frame Depth 2 in, Rough Opening Length 20 in, Maximum Pressure 1 in wc This model is a non-flanged exhaust backdraft damper. The blades have a felt seal on the leading edge for quiet closing and better protection from the weather. Spring assisted to allow blades to open quickly. Ideal for use in roof curbs, duct work, or wall collars when using a fan or power roof venti.

Related Items

Dayton 4Hz94 Compact Air Curtain

REVCOR T1403-27 R Propeller,14 In Dia,27 Deg Pitch 2MTX2

Dayton 44Yu10 Exhaust Fan, 36In, Belt Drive Less Motor

Dayton 2Utu8 Blower Wheel, Dia 9 7/16 In, Bore 1/2 In

Dayton Blower Motor 3M546E RPM 1450, HP 1/30, V 115 HVAC NOS

20x25x4 MERV 11 Pleated Air Filters by Glasfloss. 6 Pack (Actual Depth: 3-3/4″)

Dayton 4C445A Centrifugal Blower 115v-ac 1570rpm 0.1hp

Genteq HW56 3/4 HP 208-230V ECM Blower Motor Tester Module TheDealerToolbox (