4" Horizontal/Vertical Mount Fire Damper 2634-8X8 Step Down Ceiling Diffuser NGD - Narrow ceiling grid

NGD - Narrow ceiling grid dimples for 9/16" T-Rails

Fractional

MRI Compatible

Designed for ceiling or sidewall applications

HVL Series Engineering/Performance Data

4" Horizontal/Vertical Mount Fire Damper 2634-8X8 Step Down Ceiling Diffuser NGD - Narrow ceiling gridh3. Standard Features * 2633 Square or rectangular out of airstream fire damper for vertical mount only. * 2634 Square or rectangular Spring actuated (6) out of airstream fire damper for horizontal or vertical mount. * UL and California State Fire Marshall approved * 4 1 4" standard frame style * Maximum dimension 60w, 52h * Interlocking steel roll formed blade (3) with roll formed frames (1) * Blade lock (5) * Damper manufactured from corrosion