3 Hour Out Of Air Fire Door Grille 2663-48X28 Residential Registers & Grilles Spiral Diffuser Radius Flush Mount

Spiral Diffuser Radius Flush Mount Diffuser Single Deflection with Damper

Submittals and Performance Data

2" ADC compliant round collar with bead for ease of installation (square sizes only)

Standard Features * 3-way diffusion for draft-free heat or air conditioning * For ceiling or sidewall applications * All component parts

855 Series Submittal

3 Hour Out Of Air Fire Door Grille 2663-48X28 Residential Registers & Grilles Spiral Diffuser Radius Flush Mounth3. 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"