This rectangular catch tank is expertly fabricated from 0.080" aluminum. A sight tube on the right side shows when the tank needs to be emptied, and a 10mm threaded plug is provided on the bottom for easy draining. Two barbed fittings on the top and one on the left side accept 1/2" ID rubber hoses or a breather filter (sold separately). Mounting tabs on the sides make it easy to attach to a vertical panel. Measures 7" H x 4" W x 2 5/8" D (less fittings and mounting tabs). 1 liter capacity satisfies SCCA requirements.