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Counter bore attaches to flats on shank with two hex screws for a secure fit and can be adjusted for controlled pilot hole depth
5-7/8 x 5-7/8 in Plate
Pilot bit offers unique grind that starts holes accurately every time
Specifications: 4 to 12 in Line Stretcher
Total BTU Rating: 32500 Btu/hr
Imperial® MEA-0625-6 Air Duct, 25 ft L, R4.2, 10 in-WG, Polyester Safety & Grab Bars Counter bore attaches to flatsImperial Air Duct, 6 in Duct, Round Vent Duct, 25 ft Length, 10 in WG, Polyester, R Value: R4. 2, 4000 fpm Velocity Rating, 20 to 140 deg FFeatures: Designed for wherever UL 181 standards for Class 1 Air Duct is required The 2 ply polyester laminated inner core provides outstanding resistance and durability The fiberglass reinforced metalized outer jacket is extremely strong and will not unravel Suitable for use with heating, ventilation and air
