With damper

Material
ASTM-A653 CS Type B Galvanized Steel G-30 Coating LFQ Chemical Treatment

Assembly
Assembled with 1/8″ x 1/8″ zinc coated steel rivets

Spin-In
Roll formed for use in metal plenums with v-notch

Insulation
To be wrapped with fiberglass insulation by contractor

Options
Aluminum in 4-14″ Fabricated from 3003-H14 26GA Stainless Steel in 4-14″ Fabricated from T304 2B 26GA

Available Raised Quadrants
Duro Dyne # 7210 ESO38R-150 3/8″ Standoff Regulator for 1 1/2″ wrap
or
Duro Dyne # 7210 ESO38R-150 3/8″ Standoff Regulator for 1 1/2″ wrap Nylon grommets are installed on each side of the collar to reduce air loss.