The 4" Oval Installation Kit including Hold Down Plate (1) and Starter Plates (2). It is used for many B vent exhaust applications. It can be used with natural gas or liquid propane, Category I appliances.
Some appliances that use Type B Gas Vent Systems include:
- Furnaces
- Water Heaters
- Boilers
- Room Heaters
- Decorative Gas Appliances
- Unit Heaters