SPECIAL ORDER ITEM. Review Returns Policy before purchase. Engineered for plumbing and HVAC ventilation systems, this vent flashing creates a secure, weather-resistant seal around roof penetrations to prevent moisture intrusion. The galvanized steel construction provides structural integrity for exterior roof applications, ensuring the roofing system remains protected from environmental exposure. This component meets UPC- and IPC- plumbing code requirements for residential and commercial installations and maintains low lead compliance for safe integration into standard plumbing infrastructure.