4" 3 Hour Vertical Mount Fire Door 2661-60X36 Residential Registers & Grilles Jamb seals (stainless steel)

Jamb seals (stainless steel)

RD - Round Ceiling Diffuser

Square or rectangular for vertical mount only

Standard Features * For evaporative cooling or high velocity exhaust applications with divided 2-way multi-louver and combination shut-off * Countersunk mounting holes for flush appearance with color matching Phillips posi-drive screws * Soft White

Extended sleeve ( See Model 2702)

4" 3 Hour Vertical Mount Fire Door 2661-60X36 Residential Registers & Grilles Jamb seals (stainless steel)h3. 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"