Product Overview Transition from a flat surface like a lined or unlined plenum to round pipe or insulated flexible duct. [QTY/UOM: 1EA / 1EA] [PMS SKU: ] [Category: HVAC DUCT WORK & VENTILATION/OTHER;Shop All]
Quick view Add to Cart Master Flow Master Flow SCF4 Duct Collar, Steel [SKU: ORG8816969] MSRP: $7.65 Was: Now: $3.83 Quick view Add to Cart
Quick view Add to Cart Master Flow Master Flow SCF8 Duct Collar, Steel [SKU: ORG7144561] MSRP: $12.60 Was: Now: $6.30 Quick view Add to Cart
Quick view Add to Cart Master Flow Master Flow ATTO6 Duct Take-Off, 6 in Duct, Steel [SKU: ORG8983397] MSRP: $22.89 Was: Now: $11.45 Quick view Add to Cart
Quick view Add to Cart Master Flow Master Flow WVA4BL Round Wall Vent, 4 in Duct [SKU: ORG4009676] MSRP: $47.10 Was: Now: $23.55 Quick view Add to Cart
Quick view Add to Cart Master Flow Master Flow GT12E Turbine Head, Galvanized Steel [SKU: ORG6172563] MSRP: $112.62 Was: Now: $56.31 Quick view Add to Cart
![Master Flow SCF6 Duct Collar, Steel [SKU: ORG9541293]](https://cdn11.bigcommerce.com/s-er447ou6zb/images/stencil/600x600/products/34448/33118/9541293__16011.1683068823.jpg?c=1 "Master Flow SCF6 Duct Collar, Steel [SKU: ORG9541293]")
![Master Flow SCF6 Duct Collar, Steel [SKU: ORG9541293]](https://cdn11.bigcommerce.com/s-er447ou6zb/images/stencil/1280x1280/products/34448/33118/9541293__16011.1683068823.jpg?c=1 "Master Flow SCF6 Duct Collar, Steel [SKU: ORG9541293]")
![Master Flow SCF4 Duct Collar, Steel [SKU: ORG8816969]](https://cdn11.bigcommerce.com/s-er447ou6zb/images/stencil/500x659/products/34447/33117/8816969__75073.1683068822.jpg?c=1 "Master Flow SCF4 Duct Collar, Steel [SKU: ORG8816969]")
![Master Flow SCF8 Duct Collar, Steel [SKU: ORG7144561]](https://cdn11.bigcommerce.com/s-er447ou6zb/images/stencil/500x659/products/34449/33119/7144561__83092.1683068823.jpg?c=1 "Master Flow SCF8 Duct Collar, Steel [SKU: ORG7144561]")
![Master Flow ATTO6 Duct Take-Off, 6 in Duct, Steel [SKU: ORG8983397]](https://cdn11.bigcommerce.com/s-er447ou6zb/images/stencil/500x659/products/34450/33120/8983397__54770.1683068824.jpg?c=1 "Master Flow ATTO6 Duct Take-Off, 6 in Duct, Steel [SKU: ORG8983397]")
![Master Flow WVA4BL Round Wall Vent, 4 in Duct [SKU: ORG4009676]](https://cdn11.bigcommerce.com/s-er447ou6zb/images/stencil/500x659/products/34455/33125/4009676__21188.1683068826.jpg?c=1 "Master Flow WVA4BL Round Wall Vent, 4 in Duct [SKU: ORG4009676]")
![Master Flow GT12E Turbine Head, Galvanized Steel [SKU: ORG6172563]](https://cdn11.bigcommerce.com/s-er447ou6zb/images/stencil/500x659/products/34421/33091/6172563__02026.1683068809.jpg?c=1 "Master Flow GT12E Turbine Head, Galvanized Steel [SKU: ORG6172563]")