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.
Details:
How we size the Register Boxes: Length x Width x Collar
| M&M Manufacturing Co. | |
|---|---|
| Product Category | HVAC Ductwork |
| Product Number | 6411468 |
| Product Name | #641 Register Box 4" Tall w/Snap-Rail Flange |
| Application | Commercial |
