Overview Warranty Information Product Description AIRnet Fiberglass reinforced polymer, 20 mm Equal Union / Coupler in PF Series; pipe to pipe connection fitting (push to fit up to 50 mm).AIRnet Fiberglass reinforced polymer, 25 mm Equal Union / Coupler in PF Series; pipe to pipe connection fitting (push to fit up to 50 mm).AIRnet Fiberglass reinforced polymer, 40 mm Equal Union / Coupler in PF Series; pipe to pipe connection fitting (push to fit up to 50 mm).AIRnet Fiberglass reinforced polymer, 50 mm Equal Union / Coupler in PF Series; pipe to pipe connection fitting (push to fit up to 50 mm). Warranty Information 10 years, manufacturers defects covered. Product Videos Custom Field Product Reviews