The Standard Size #651 Register Box wo/Tabs or Rails is available in 9 different sizes for connection with round duct from 4" through 9" diameters.
| M&M Manufacturing Co. | |
|---|---|
| Product Category | HVAC Ductwork |
| Product Number | 6511066 |
| Product Name | Standard Size #651 Register Box wo/Tabs or Rails |
| Application | Commercial |
