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Rectangular Duct Fittings


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10" x 8" Duct Starting Collar
Manufacturer: National Excelsior Company
SKU# 129034
8" x 8" Duct Starting Collar
Manufacturer: National Excelsior Company
SKU# 129033
6" to 6-1/2" x 6-1/2" Side Takeoff
Manufacturer: National Excelsior Company
SKU# 113796
6" Scotty Takeoff with Skirt
Manufacturer: National Excelsior Company
SKU# 113777
7" Top Takeoff Long Collar
Manufacturer: National Excelsior Company
SKU# 113761
6" Top Takeoff Long Collar
Manufacturer: National Excelsior Company
SKU# 113760
6" to 7" x 9" Double Takeoff
Manufacturer: National Excelsior Company
SKU# 113728
6" to 6" x 6" Side Takeoff
Manufacturer: National Excelsior Company
SKU# 113726
8" to 14" x 6-1/2" Side Takeoff
Manufacturer: National Excelsior Company
SKU# 113718
7" to 12" x 6-1/2" Side Takeoff
Manufacturer: National Excelsior Company
SKU# 113717
1 2 3 4 5 6 7 8 9 10 Next Total: 16