Metal-Fab Type B-Vent 4" Partition Thimble 20-years If the heater is installed

If the heater is installed in an open room

Retrofit Plug n Play

Hearth Kit (Required to Complete)

Majestic Insert Brochure

Depth:    8"

Metal-Fab Type B-Vent 4" Partition Thimble 20-years If the heater is installedType B Gas Vent products are tested and listed to UL 441 for approved gas appliances and feature our innovative twist lock connection and locking tab, eliminating the need for sheet metal screws. Metal Fab Type B Gas Vent combines hemmed flues and casings that maximize product durability and reliability and minimize installation time. Designed for versatility, Metal Fab Type B Gas Vent products 3" 6" adapt to major competing brands and when installed