Pressure Relief Horizontal Air Up 3520-16X14 Specialty Products 104 - four way *

104 - four way * 2x2 galvaneal steel panel with seismic support holes * Square to round No Labor Collar * Soft White Options * 104 D - steel multi-shutter damper * 104 O - steel opposed blade damper * 104 FR

3 or 4 way air patterns from face * One size fits 6" thru 16" (collar by others) * Soft White

Smoke Test and More Information on MA Series Diffusers

Tamper-proof Screws

Performance Data With Opposed Blade Damper

Pressure Relief Horizontal Air Up 3520-16X14 Specialty Products 104 - four way *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