Linx (Formerly Lindab USA) Safe Spiral #NPU Coupling
- NPU duct-to-duct coupling.
- Lindab Safe self sealing single wall round spiral duct system.
- Meets SMACNA Leakage Class 3 without the application of external sealants or flanges.
- Linx 10 year warranty to meet SMACNA Leakage Class 3. Entire system must be Lindab Safe spiral pipe and fittings.
- Standard G60 galvanized steel meets ASTM A653 and A924.
- Duct system gauge in accordance with the latest SMACNA HVAC Construction Standard to +10 inches w.g.
- Fitting ends have rolled edges and factory installed double lipped U-profile EPDM rubber gaskets.
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