Use this to fill hydraulic reservoirs. Allows up to 200 GPM or 26.7 CFM air flow. Keeps reservoir clean. Nickel-chrome plated cap. 5 1/4in. from top to bottom, cap is 3in. diameter. 40 Micron Screen In Cap 15 Micron Basket Screen Filter Screen: 2in. Diameter x 3in.H Gasket: 3 7/8in. O.D., 2 1/32in. I.D. Mounting . . .