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Blade lock to secure blades once the product is activated
2" ADC compliant round collar with bead for ease of installation (square sizes only)
904 - Double Deflection Adjustable Aluminum Blade Grille For a 48" x 20" Duct Opening (front blades parallel to shortest dimension)
FGAD Series Submittal
Opposed Blade Damper
3 Hour Out Of Air Fire Door Grille 2663-20X16 Step Down Ceiling Diffuser Blade lock to secure bladesh3. 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"
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