4" Horizontal/Vertical Mount Fire Damper 2634-30X12 past 12 months Standard Features * Round 1-1/2

Standard Features * Round 1-1/2 hour fire damper * Horizontal or Vertical installation * UL and California State Fire Marshall approved * Damper construction meets NFPA 90A requirements * Stainless steel curtain * 16 gauge steel frame * UL listed fusible link

Face set in an outer T-Bar filter grille frame

1550 Series Engineering/Performance Data

Standard Features * Extruded aluminum (

Blade lock to secure blades once the product is activated

4" Horizontal/Vertical Mount Fire Damper 2634-30X12 past 12 months Standard Features * Round 1-1/2h3. 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