The #508S Starting Collar w/Holes and Sealed Flange On Inside for 1" or 1 ½" Ductboard is available in 12 sizes from 4" through 20".
| M&M Manufacturing Co. | |
|---|---|
| Product Category | HVAC Ductwork |
| Product Number | 508S12 |
| Product Name | #508S Metal Starting Collar w/Holes & Sealed Inside Flange for 1" or 1½" Ductboard |
| Application | Commercial |
