+x Fasta - 12/31/2018 3:54:28 PM Click To Enlarge Click To Enlarge Click To EnlargeThis is my DIY oven built about 14 years ago. 2" thick steel skin insulated panels with polyurethane foam core. 4m long x 1.1m x 1.1m. It runs 100C cooks day after day. Faultless. Air is drawn into the two fans and behind the alloy panel, then down and out the open bottom blowing across the finned electric elements.Paid a control specialist to set up a controller with box and relays for me. Cost about $1000 just for that but I am sure you can buy these types of controllers for about $300.