32 Cu/ft Caternary Arch hybrid kiln with drop down ash pit, brick grate, RW 350k BTU x2 power burners, center hinge pin swing door, and rolling stoke hole doors. We used 18"x18"x3" 55% alumina floor, Clipper Super Duty High Alumina #1 arch, Clipper Super Duty High Alumina walls, Seneca 60P grate and flue, BNZ 2660 for the door, and BNZ 2300 for cold face insulation/sub floor to build this kiln. The arch is 4.5” hard brick, 3” BNZ 2300, 2 layers 6# 1” fiber, chicken wire mesh, 1” of 80 lb scratch coat sanded with fiber stucco/3 gallon vermiculite custom mix for skin coat. We installed 2× 350k btu/hr burners to bring the kiln to cone 10 in 12-14 hrs firing time. Interior dimensions hold 2x 14×28 shelf stacks, and 1x 10×24 door stack. 3/16”-1/4” mild steel framing ranging from 3” to 5” give this kiln and swing door structural integrity. Rolling stoke hole doors make burning wood easy, and this kiln can burn about 3/4 cord of split hardwood in 12 hrs from 1600-2300 degrees with a 10 hour hold at temp to build ash. Robert and I built the kiln in 10 days.