The bead door is 2 1/2" x 6 1/2". The kiln's maximum temperature is 1700F. The Fusion-6 fires on a 120 volt, 20 amp circuit. I would ask to see pictures of the firing chamber including the lid. What is the condition of the firebricks?
More information on this model:
http://www.paragonweb.com/FUSION6.cfm
Sincerely,
Arnold Howard
Paragon Industries, L.P., Mesquite, Texas USA
ahoward@paragonweb.com /
www.paragonweb.com