Pressure Relief Horizontal Air Up 3520-14X18

Pressure Relief Horizontal Air Up 3520-14X18h3. 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

904 - Double Deflection Adjustable Aluminum Blade Grille For a 30" x 14" Duct Opening(front blades parallel to shortest dimension)

For damper free area chart A click here * 2663 - Out-of-Airstream fire door

1600 Series Engineering/Performance Data

Holds up to 1" filter

Standard Features * 2633 - Square or rectangular out-of-airstream fire damper for vertical mount only

3/16” crossbars

Soft white

Concealed mounting holes with mounting screws

Options * Sleeve variations h3

055 T6 extruded aluminum * Five air patterns: 700 CB10 - one way

102 PC - corner

floors and partitions with fire resistance ratings of 2 hours or less (for ceiling application