on all orders to the lower 48 states
Use the Harman Pellet Stove Increaser to transition from a Harman stove 3" exhaust hole to 4" Rock-Vent Pellet Pipe. This is only used on Harman stoves (with the exception of Harman P-Series).
The Harman Pellet Stove Increaser will make it easy to connect your 3" Harman stove to 4" Rock-Vent Pellet Pipe. This 3" to 4" Increaser will slide over the Harman stove exhaust hole and transition to 4" pellet pipe in the situation that 4" pellet pipe is needed. Fabricated with 304L stainless steel inner and painted black galvalume outer. This is only used on Harman stoves. Note: Do not use the Harman Pellet Stove Adapter with a Harman P-Series Stove (use the Harman Stove Collar Adapter).