Pay in 4 interest-free payments of $28.01 Learn more
Ships within 48 hours · Estimated delivery Aug 15 - Aug 20
with 57% free area
Standard Features * Removable core * Available in five air patterns * 22 gauge steel flush core provides uniform air distribution * Square to round No Labor Collar (6" thru 18") * 2x2 galvaneal steel panel with seismic support holes * Soft White Options * 700DVD D - steel multi-shutter damper * 700DVD O - opposed blade damper * 700DVD FR - U
SD52 - Transition Box Spiral Pipe Grille (Single Deflection)
back blades parallel to the shortest dimension Extruded aluminum surface mount frame with signature line marks Provides 4-way air flow on one plane Nylon bushings on adj
4" 3 Hour Vertical Mount Fire Door 2661-24X24 Smoke-Fire Damper with 57% free areah3. Standard Features * 2661 Square or rectangular fire door for vertical mount only. Maximum dimension 60x60. For damper free area chart A click here * 2663 Out of Airstream fire door. Square or rectangular for vertical mount only. Maximum dimension 60w x 52h. For damper free area chart B click here * 2665 Round fire door for vertical mount only. Available 4" thru 52" round. * 3 hour rated * UL and California State Fire Marshall approved * 4 1 4"
US$ 49999.50
US$ 49999.50
US$ 35.95
US$ 90.00
