Industrial grade Johnson Gas burners used with a reduction fired gas kiln for up to 2300 degrees. New each were $2,500 each. Retired from pottery, units were working when last used. Had 2"piping. There is an extra rebuilt motor, never used after rebuild. has stands also. 50 pound each, 40" long with all piping, 19" wide. We have many pictures to share if interested. Best Offer...