R-6 Insulated Register Boxes - Standard Sizes

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  #640R6 Register Box 4" Tall Without Tabs (7)

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  #641R6 Register Box 4" Tall With Snap-Rail Flange (7)

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  #648R6 Register Box 9" Tall With Side Outlet (7)

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  #649R6 Register Box 9" Tall Without Collar (4)

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  #650R6 Register Box 9" With End Outlet (6)

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  #645R6 Adjustable 45° Collar With Tabs (13)

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  #643R6Sst With Tabs (16)