D17X Dynamic Fire Damper

1½ Hour Rated Curtain Blade with Integral X-Style Sleeve Fire Damper

Model:	D17X
Depth:	4⅞”
Integral Sleeve:	22ga Galvanized Depth of 12″ or 14″
UL Classified:	1½ Hour Fire Resistance
Certifications:	Underwriters Laboratories, Inc.: 555 National Fire Protection Association: 80 & 90A ICC’s International Building Code CA State Fire Marshal Listing
Orientation:	Vertical or Horizontal
Frame Material:	22 ga. One Piece Roll Formed Galvanized Steel
Blade Material:	22 ga. Galvanized Steel
Blade Type:	Curtain
Closure Spring Material:	Heat-Treated Type 301 Stainless Steel
Closure Spring Type:	Constant Force Coiled Negator
Sleeve Types:	A Style – Without Transition Blades in Airstream B Style – BPan Blades out of Airstream C Style – Round, Oval or Square Transition with 100% Free Area
Finish:	Mill

*Dampers smaller than minimum frame size require transitions.