Pressure Relief Vertical Mount 3510-14X12 Specialty Products 1x2 T-Bar (8" x 20"

1x2 T-Bar (8" x 20" duct)

1” rim size (2” larger than nominal duct size / order size)

904 - Double Deflection Adjustable Aluminum Blade Grille For a 20" x 12" Duct Opening (front blades parallel to shortest dimension)

TS Series Engineering/Performance Data

SD34 Series Performance Data

Pressure Relief Vertical Mount 3510-14X12 Specialty Products 1x2 T-Bar (8" x 20"h3. Standard Features * 3510 Vertical mount * 3520 Horizontal mount air up * 3530 Horizontal mount air down * Designed to open with negative or positive pressures for intake or exhaust air * Felt edge blades to hold noise to a minimum * Aluminum construction * Blade to blade linkage * 1 4" pivot pins in nylon busings * Maximum size 24 x 24 * Mill finish h3. Options * Sleeve variations * Mounting flange * Adjustable counter balance to adjust various