World's best hanger strap. Hanger has 1 in adjustment button holes. For 2 in x 8 in Joist, material locks to 1 in roofing nail (button) when pulled down. For 7/16 in particle board, material locks to NO 8 sheet metal screw (button) when pulled down. 2 in HDPE Duct Board Hanger supports 50lb per strap. 100 ft Rolls Also use Saddles with 2 in Thermo Button-Lok as extra support for square duct board.
Cuts hanger and labor costs by one half|Button holes easily adjust duct up or down|Eliminates transfer of heat loss|Eliminated noise from duct system|Made from gray high density polyethylene|Easy cut with Sears HandiCuts, or sheet metal snips
Thermo Thermo-Button-Lok Hanger Strap, 100 ft Length, 2 in Width, Polyethylene, Gray