OUR 1" MODEL WILL FLOW APPROXIMATELY 1150/1200 GPH. THE TOTAL HEIGHT WITH FITTING ATTACHED ON TOP IS 4 3/4". Standard bracket assembly supplied fit's glass tanks with tank frame width of 1-5/8" max. Units are now supplied with a BLACK fpt x fpt inlet(for hard pvc plumbing) with optional fitting included for hose connections. Inlets are ADJUSTABLE for easier installation of incoming water supply. Features: * Oscillates the return from your existing pump or canister filter 90 degrees every 60 secs. * Operates with any pressure. * Improved circulation - stimulates growth and carries nutrients to corals and plants. * Eliminates use of powerheads * Sits on top frame of tank - built in bracket to fit all aquariums. * Compact (5" x 7" x 2½") * Energy efficient (4W) motor is UL Listed and CSA Certified * Max Flow Rate: 1,150 gph