4" Horizontal/Vertical Mount Fire Damper 2634-26X26 Step Down Ceiling Diffuser 1/4” Wide x 1-27/32” High

1/4” Wide x 1-27/32” High slots

Mill finish

2x4 T-Bar (20" x 44" duct)

Single deflection transition box mount spiral pipe grille

Standard Features * Fixed blade return air T-Bar lay-in filter grille * Square collar for 20 1/2" x 20 1/2" duct * Hinged removable face * 20" x 20" x 1" filter (not included) * Seismic support holes * Soft White Options * 920 TFG - steel outer frame * 920 2 TFG - 2" filter spacing (filter not included) * No Labor Collar - square to round (2x2 only) * 1x2 (20x8 filter) or 2x4 (20x44 filter) * Satin Anodized Finish available on this product

4" Horizontal/Vertical Mount Fire Damper 2634-26X26 Step Down Ceiling Diffuser 1/4” Wide x 1-27/32” Highh3. 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