Pressure Relief Horizontal Air Up 3520-20X10 Step Down Ceiling Diffuser Standard Features * Flush modular

Standard Features * Flush modular curved blade T-Bar diffuser * Curved blade cores sit flush with face for more uniform air flow * Movable cores provide multiple fixed air patterns * 6x6 thru 14x14 diffuser sizes * Square to round No Labor Collar * 2x2 galvaneal steel panel with seismic support holes * Soft White Options * 700MCB O - opposed blade damper * TVB - Thermal Vapor Blanket * Square collar

2" ADC compliant round collar with a bead for ease of installation

Steel multi-shutter damper

Diffuser available in sizes 6×6 through 20×20

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

Pressure Relief Horizontal Air Up 3520-20X10 Step Down Ceiling Diffuser Standard Features * Flush modularh3. 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