Contact us at dragontech@blackfoot.net for more info.
I have a used quick change secondary air tube for sale.
This tube is sized for a 6″ batchbox. Length is 19″ long.
Condition is dirty but as new.
As is with no riser pipe cost is $30 + ship.
With plain steel riser included cost is $40+ship
Do to a change in building plans I have bought back a 7″ Batch pop-in door
This door was never installed . It has a fire viewing window and comes with a primary air blockout, 10″x15 1/8″ Id. opening.
Price is $150 + ship
RA330 secondary air tubes are currently on backorder from Rolled Alloy
UPDATE
As of 3-6-2022 I am out of RA330 tubes
Ship date to me is now third week of July
At this time I expect a price of $85 + ship
All steel prices have sharply increased.
Unfortunately my steel made product prices will reflect that.
I am still working out of state, but with reduced hours .
Build times and response times will be shorter.
At this time I am not ready to take orders for my heavyweight doors.
Quick change secondary air tubes are available with steel stubs
Lite weight pop in doors are available with a shorter wait time for manufacture.
Fire clay , ash tools , temp gauges and bypasses are still available.
Dragon Tech - A Rocket Mass Heater Store 