The #500DBD Metal Ductboard Starting Collar w/Damper are available in 12 sizes from 4" through 20" diameters.
| M&M Manufacturing Co. | |
|---|---|
| Product Category | HVAC Ductwork |
| Product Number | 500DBD10 |
| Product Name | #500DBD Metal Ductboard Starting Collar w/Damper |
| Application | Commercial |