This Williams oval vent starter kit is designed to help simplify vent installation for compatible top-vent furnaces by providing the core components needed to begin proper exhaust routing. The kit includes a hold-down plate, two spacer plates, two 4-inch by 2-foot oval vent sections, and an oval-to-round adapter, all constructed from durable metal for dependable performance over time. When installed correctly, the vent components help support safe operation by directing combustion byproducts away from the living space, which is essential when a natural gas or propane gas heater is in use. Designed for compatibility with any Williams top-vent furnace, the kit works as a starting point for venting systems connected to a natural gas or propane gas wall heater or similar equipment. Additional double-wall round pipe, flashing, and a roof cap are required to complete the installation, allowing installers to tailor the vent system to the specific structure. Convenient packaging and clearly matched components make this starter kit a practical choice when installing or servicing a natural gas or propane gas room heater that requires a top-vent configuration. Must be completed with double-wall round pipe, flashing and cap through the roof (not included).