3 Cone T-Bar Diffuser HVD-BD-16 Step Down Ceiling Diffuser All steel parts with galvanized

All steel parts with galvanized finish or zinc coating

22 gauge butterfly style galvanized steel blades

Standard Features * Galvaneal steel face designed for high air volume delivery * 360 air diffusion * No Labor Collar * Seismic support hangers * Available sizes: 6"

Standard Features * Lightweight Aluminum vent louver * This is a larger version of the 4901 series * Flush face * Spring clip mounting * Able to withstand wet and corrosive environments * Easily installed using only a high grade silicon caulk * Satin Anodized finish Options * IS - Insect screen * Standard Color or Designer Color Finish available on this product

425 Series Engineering/Performance Data

3 Cone T-Bar Diffuser HVD-BD-16 Step Down Ceiling Diffuser All steel parts with galvanizedStandard Features * Cones are one piece stamped construction providing a clean, smooth style * 360 air diffusion * Excellent for variable air volume applications * Hinged down core for easy access * No Labor Collar * Seismic support hangers * Available sizes: 6" 10", 12", 14" and 16" * Soft White Options * Field installable Bowtie Damper (BD) * FTD Fixed T Bar Diffuser (6", 8", 10", 12" and 14") * HVD OR factory installed opposed radial damper (sizes