adjust-a-fit diameter hand adjustment of 3 1/4" (83) allows flexibility for varying dish sizes -- adjusting height level is easy and convenient. simply detach and attach springs as needed with no tools required -- Choose the type of dispenser that best fits your needs - Open model for economic dispensing - Shielded to protect against contaminates and plate chipping - Heated with adjustable thermostatic control to heat dishes (thermostat min- 100 degree F, max- 175 degree F) -- stainless steel material is durable and easy to clean and sanitize -- regular height models have 25" (635) stacking height capacity -- ada-compliant height models have 22" (559) stacking height capacity