M&M - 507 Collar w/Holes for 1" or 1-1/2" Ductboard

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Description

#507 Ductboard Starting Collars w/Holes are available for 1" to 1 1/2" thickness or 1 1/2" to 2" thickness ranges. Both models are also available with an optional scoop for added air deflection.

California residents: see Proposition 65 Warning