M&M - 641 - R4 Insulated Register Box 4" Tall w/Rail Flange R-4

MFR Part Number: 641 - R4

PRODUCT HIGHLIGHTS

Insulated Register Box 4" Tall with Rail Flange
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Description

Details

Standard Size #641 Register Boxes are lined with 1" Ductliner to provide an R-Factor of R-4. The #641 Register Box is 4" Tall with Snap-Rail Flange.