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blades prevent metal on metal rattle
2" ADC compliant round collar with bead for ease of installation
425 Series Engineering/Performance Data
contour molded fiberglass back with a foil barrier backing
linkage and handle enclosed in valve to assure trouble-free operation * Countersunk mounting holes for flush appearance with color matching Phillips posi-drive screws * Steel multi-shutter damper * Soft White Options * 200 O - steel lever operated opposed blade damper * Tamper proof screws * Standard Color
Opposed Blade Damper 0BD-18X26 Step Down Ceiling Diffuser blades prevent metal on metalStandard Features * . 055 T6 extruded aluminum construction * Fits all Shoemaker commercial products * Controls airflow evenly * Screwdriver operated * Available in even sizes * Mill finish Options * Clips for easy installation * Soft White
