This 8″ Hydraulic retracted closer kit includes  Closure w/ (2) Clevis (1) Butterfly Bracket & Rocker Arm.  Suitable for  Side Hinged Chute Intake Doors. Will fit both Trash Chute Doors and Laundry Chute Doors. This closer will fit the following size doors 15 x 15, 18 x 18, 21 x 21 and 24 x 24, and will be suitable for a variety of manufactures but most commonly for Wilkinson Chutes Hi-Rise.