PAKE Type Big Flow Filter has 1 pc 40"PAKE cartridge inside of it. A. Fully Filter Housing and accessories are made of FRP material( which are finished by SMC method) .Non-corrosive, no leakage and could bear high pressure & high temperature. B.Filter internal structure design is unique, novelty and reasonable. The lower end is supported by a continuous air. The upper end is provided with the fillter bag positioning lock block. The filter bag can befixed only by rotating it 60 degrees. C. The customers only need to revolve the filter cartridge then could be fixed because internal structure has its cartridge positioning function. Install and change cartridges without any tools, it also decrease the time of change cartridge. D.The surface of bag filter adopts the laminating process, which is beautiful, environmentally friendly and color adjustable.