Parallel Volume Damper Low Leak 3000PLL-66X28 Smoke-Fire Damper back blades parallel to the

back blades parallel to the shortest dimension Extruded aluminum surface mount frame with signature line marks Provides 4-way air flow on one plane Nylon bushings on adj

3/16" cross bars

Install with louvers in up or down position for best duct concealment

Options * MAR - Mounting Angle Ring (sold in pairs - 2 needed

080") Aluminum Construction 1/8" GA (

Parallel Volume Damper Low Leak 3000PLL-66X28 Smoke-Fire Damper back blades parallel to theh3. Standard Features * 16 gauge galvanized channel frame * Parallel blades are cee stiffened 16 gauge galvanized for strength and stability * Blades pivot on non metallic celcon bushings * 1 2" square zinc plated steel pivot pins * 1 2" square zinc plated steel adjustable operating shaft extending up to 4" beyond the air control frame * Single blades on dampers with a height of 12" or less * Mill finish h3. Options * 3000 PLL Low Leak Air Control