4" NON GSKT SD PRESSED 90 ELBOW
Part #SD490NG
MFG #G490NG
Manufacturer Name : Macy
Option : 90 Elbow
Vent Size : 4"
- HVAC Duct Elbow
- Type Elbow, 90 Degree
- Applicable Standard UL 723, NFPA 55
- Size 4" Non-Gasketed x 4" Non-Gasketed
- Used On HVAC Spiral Duct
- Overlapped and Stitched Welded Along the Entire Length of the Fitting; Standard Seam Gore-Locked; Button Punch; Spot Welded; SPIRAmir Connections Satisfies SMACNA'S Leakage Class 3 Requirements, per SMACNA'S Duct Design Manual from -20" WG to +12" WG; SPIRAmir Spiral Duct System Produces a Flame Spread Index of Zero and Developed Index of Zero
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