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dayton 3hgn9 control damper8 1 4in d10 in duct dia .
control damper blade type round frame material 20 ga. galvanized steel blade material 14 ga. galvanized steel max . velocity 3000 fpm damper dia . 9 7 8 in . frame depth 8 1 4 in . duct dia . 10 in . axle dia . 1 2 in . axle plated steel max . temp . 180 degrees f pressure differential max . 4 in . wg bearings stainless steel seals silicone linkage for use in low to medium pressure and velocity systems includes br b features b ul li bearings stainless steel li li damper dia . in . 9 7 8 li li duct dia . in . 10 li li item control damper li li max . temp . f 180 li li pressure differential max . 4 wg li li type round single blade li li frame material 20 ga. galvanized steel li li blade material 14 ga. galvanized steel li li seals silicone li li for use in low to medium pressure and velocity systems li li requires actuator li li frame depth in . 8 1 4 li li max . velocity fpm 3000 li li blade gauge 14 li li frame gauge 20 li li axle type 1 2 dia plated steel li li includes li li max . temp . 180 degrees f li li blade type round li li axle plated steel li li linkage li li max . velocity 3000 fpm li li axle dia . 1 2 li li frame depth 8 1 4 li li duct dia . 10 li li damper dia . 9 7 8 li ul