The #500DBH Metal Ductboard Starting Collar w/Holes are available in 13 sizes from 4" through 22" diameters.
| M&M Manufacturing Co. | |
|---|---|
| Product Category | HVAC Ductwork |
| Product Number | 500DBH18 |
| Product Name | #500DBH Metal Ductboard Starting Collar w/Holes |
| Application | Commercial |
