Description
The York S1-PF-834044 PP Firestop is a 4-inch diameter polypropylene safety component used in venting and piping penetrations within HVAC systems. It is installed at wall or floor pass-through points to slow the spread of fire and smoke through duct or pipe openings during abnormal conditions. This part is commonly applied in condensing units, furnaces, and other equipment where sealed penetration points are required. Positioned around the 4″ vent line, it maintains separation between building compartments and supports safer routing of exhaust or intake lines in residential and commercial installations.
