Manufactured by Smoot Co. Model 18 FRC19CS. 19 pleated cartridge type filter elements. 6" diameter x 18" tall filter area. Units are nominal 42" diameter. Overall height 150". Outlets have special fluidized bin outlet design with air cylinder actuators. 5.5" od conveying air inlet pipe. Swing out maintenance access door 16" W x 15" actual opeing size. Each collector has 5 solonoid valves with 5 right angle valve pulse cleaning. Timers are included and mounted on side of housing.Unit was used for approximately 4 hours for an initial test. Fan not included.