Wnfou Foldable Bread Proofing Box delivers three-sided heating for even fermentation and precise control, ideal for sourdough, pizza dough, and yogurt projects.Its internal size of 16.3 by 12.2 by 12.2 inches accommodates multiple dough bowls at once, while the included metal rack elevates dough from the heat to prevent soggy bottoms and over-fermentation.With a temperature range of 68–131°F and a 99-hour timer, you can dial in exact proofing conditions. The unit auto shuts off when the timer ends and includes built-in overheat protection with audible alerts for peace of mind.Thick insulated construction with waterproof 600D Oxford fabric, a rigid 3mm support board and 2mm pearl-cotton insulation helps maintain stable temperatures. A top viewing window lets you monitor progress without opening the box, and the waterproof inner lining wipes clean in seconds. All-in-One fermentation solution for sourdough, pizza dough, bagels, yogurt and seed germination. Features: Three-sided heating delivers even fermentation and faster warm-up, reducing uneven rises for sourdough and artisan bread. Large internal size 16.3 by 12.2 by 12.2 inches with a metal rack that elevates dough to prevent soggy bottoms and over-fermentation. Precise temperature control and 99-hour timer with auto shutoff and audible alerts for reliable proofing. Thick insulated construction with 600D Oxford fabric 3mm rigid board and 2mm pearl-cotton insulation keeps temperatures stable and easy to wipe clean. Versatile fermentation chamber suited for sourdough pizza dough bagels yogurt and more at home.