The #503AT Metal Air Tite Starting Collar with Holes is available in 12 sizes from 4" through 20". Air Tite series starting collars have a gasketed flange to ensure the best possible sealing at the joint.
| M&M Manufacturing Co. | |
|---|---|
| Product Category | HVAC Ductwork |
| Product Number | 503AT18 |
| Product Name | #503AT Metal Air Tite Starting Collar w/Holes |
| Application | Commercial |
