Parallel Volume Damper Low Leak 3000PLL-44X10 Step Down Ceiling Diffuser listed Fire-Resistance Diffusers * TVB

listed Fire-Resistance Diffusers * TVB - Thermal Vapor Blanket * Square collar

Standard Features * Full size fixed bar blade T-Bar lay-in return air grille *

* 3 hour rated * UL and California State Fire Marshall approved * 4-1/4" standard frame style * Interlocking steel roll-formed blade (3) with roll-formed frames (1) * Blade lock (5) * Damper manufactured from corrosion tested galvanized mild steel (G-90) * Self locking corner (4) * 165° replaceable fusible link (2) h3

Spiral Diffuser Radius Flush Mount Diffuser Single Deflection with Damper

Retainer cables are provided on sizes 12" and larger to allow the inner cones to hang securely while adjusting the diffuser

Parallel Volume Damper Low Leak 3000PLL-44X10 Step Down Ceiling Diffuser listed Fire-Resistance Diffusers * TVBh3. Standard Features * 16 gauge galvanized channel frame * Parallel blades are cee stiffened 16 gauge galvanized for strength and stability * Blades pivot on non metallic celcon bushings * 1 2" square zinc plated steel pivot pins * 1 2" square zinc plated steel adjustable operating shaft extending up to 4" beyond the air control frame * Single blades on dampers with a height of 12" or less * Mill finish h3. Options * 3000 PLL Low Leak Air Control