www.supplyht.com/articles/102888-napco-dwv-system

NAPCO DWV system
February 25, 2020
NAPCO Royal Pipe and Fittings’ new NAPSYS-HR PVC DWV (drain -waste-vent) product system meets all low-smoke and -flame requirements of the Canadian Building Code, and is available in a size range of 1.5” to 10” diameter. NAPCO. www.napcopipe.com