Flat bottom, with a center bottom discharge Chamber diameter 94.25". Inlet air to the chamber is heated by a direct gas fired air heater Gas Air heater is manufactured by Maxon, type Air Flow Burner series NP. The burner uses a spark ignited pilot and control is by Maxon Series "Q" butterfly valve. Hot air enters the chamber through an air distributor on top of the chamber. The distributor has vanes that are adjustable to control the air flow pattern into the chamber. As a standard feature, a cooling ring is built in around the inlet area. This prevents particles from becoming overheated in the event they contact this area. This prevents particles from becoming overheated in the event they contact this area. If the cooling chamber is needed, it will use 375 CFM at 2" W.C. Exhaust blower is manufactured by New York Blower, and is a type "P" pressure blower. It is rated for 750 cfm, and is belt driven by a 5 HP motor at 3600 rpm. Electrical spec for the blower motor is 3/60/230-460V and the motor style is TEFC. It sits on a 184 T frame. Dryer Dimensions from Drawing L-2808-0101: Chamber diameter 7' 10.25", Height 11' 9". 4' 2" from Grade to bottom of dryer. Footprint: Approximately: 14' x 11'. Gas pressure needed, 3 psi, Power needed for Controls 115 VAC 1 ph, 60 Hz, Power required for motors 240 VAC 3 Ph, 60 Hz.