USED 5 SQ. FT.DORR-OLIVER PRECOAT ROTARY DRUM FILTER, 6 IN WIDE 3 FT DIAMETER. SS CONTACT PARTS. FILTER DRUM IS COVERED WITH CLOTH AND FILTER MEDIA. 4 TO 6 IN THICK CAKE. CAPICITY: 2 TO 20 GALLONS PER HOUR PER SQUARE FT OF FILTER AREA. 1 HP 208/230/1725/ SINGLE PHASE MOTOR-TEFC. DIRECT COUPLED REEVES VARI DRIVE - SPEED RANGE 12.8 TO 128 RPM. THIS IS A PANEL TYPE DRUM FILTER. SERIAL NUMBER: 12715 RH.