The Henry Group's Spiral Proofers are designed to provide proofing while being conveyed through a proofing room with heat and humidity controls and Cam-lock stainless panels. A 100% Stainless Frame and support structure provides durability and sanitary design. Programmable Logic Controls with VFD's and an operator interface provides a variable process time. Versatile layout configurations and sizing capabilities provide many system design options. An optional workplatform and stairs are available for mulit-story spiral systems. Relative Humidity is regulated by digital controllers and electronic sensors with modutrol steam valves to assure accuracy.