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Start Collars

4" #507R8 1.5"/2" DUCTBOARD COLLAR W/HOLES (20)
Product #: 507R8-4
20" #507R8 1.5"/2" DUCTBOARD COLLAR W/HOLES (20)
Product #: 507R8-20
START COLLAR-DUCT BOARD
Product #: 550-9
START COLLAR-DUCT BOARD
Product #: 550-8
START COLLAR-DUCT BOARD
Product #: 550-7
START COLLAR-DUCT BOARD
Product #: 550-6
START COLLAR-DUCT BOARD
Product #: 550-5
START COLLAR-DUCT BOARD
Product #: 550-4
START COLLAR-DUCT BOARD
Product #: 550-12
9" START COLLAR (16)
Product #: 551-9
7" START COLLAR (18)
Product #: 551-7
6" START COLLAR (18)
Product #: 551-6

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