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DUCT BOARD TAKEOFF 648
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648 - DUCT BOARD ADJ
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SIZE
ITEM QTY
6 X 8 - 6.........4624.........12
7 X 9 - 7.........4625.........10
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| 573-574
collar - long starting collar used as a starting collar with or
without damper for pipe and/or insulated flex duct. 5
1/2" overall length. 645 - long starting collar with
strapping bead used to install insulated flexible duct.
Overall length - 5 1/2" (undersized OD for easy flex duct
connection.) 647, 648, 656, 657, 657 - takeoffs used with
duct board. 660, 661 - "quick seal" takeoffs -
starting collar with a 1 1/2" wide, self-adhesive
gasket/flange has four pre-punched holes for attaching to metal
duct work or duct board with the use of special fasteners. |
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