The #501 Metal Tabbed Ductboard Starting Collar w/Holes is available in 12 sizes from 4" through 20".
| M&M Manufacturing Co. | |
|---|---|
| Product Category | HVAC Ductwork |
| Product Number | 5018 |
| Product Name | #501 Metal Tabbed Ductboard Starting Collar w/Holes |
| Application | Commercial |