4 CORNER ZIP CRANK™ HEIGHT ADJUSTER ZipCrank ™ Goal Height Adjusters Easy-to-Read Height Indicator From adult to youth play in 60 seconds...ZipCrank corner mount rim height adjusters are designed to avoid reduced backboard and rim rigidity common with other height adjustable goal systems * Movable framework slides up and down on two chrome plated 1 " diameter rods riding in machined steel bushings * Height adjusters are installed between the backboard and the backboard support structure and when retrofitted on existing courts moves face of backboard 4¼ " toward the free throw line * May require minor field drilling on some existing retrofit applications * Adjusts rim infinitely from official 10' to 8' heights and includes easy-to-read height indicator labels * Manual models are operated with the hand crank provided or with optional BA931 Cordless Winch Winder * Electric models operate with hard wired wall mounted BA975KS Wall Mounted Key Switch * See chart below for ordering details including use on center strut structures * Five-year limited warranty. Backboard Type 42 " x 72 " backboard with 4 corner mounts 48 " x 72 " backboard with 4 corner mounts Fan shaped backboard Other backboards with approximate 35 " (w) x 20 " rear mounting patterns Backboards that mount to single 6 " or 65/8 " diameter support structures Backboards on certain T-Rex portable backstops See page 8 for details Manual Operation Electric Key Switch Operation BA980RS BA980RT BA980F BA980F BA980RSE BA980RTE N/A N/A See page 15 for adapters and consult a Bison Product Specialist BA980P N/A Electric Actuator Operation Options BA931 Cordless Winch Winder Kit Standard Manual Crank Operation Standard Manual Crank Operation Each ZipCrank Height Adjuster is supplied with one manual adjustment rod that allows easy up and down operation from the gym floor. Optional BA931 Cordless Winch Winder Operation Optional BA975KS Electric Key Switch Operation BA931 Cordless Winch Winder Kit Increase the ease and speed of adjusting Bison ZipCrank Goal Height Adjusters with this cordless, rechargeable winch winder * Kit includes cordless drill, battery charger, special ½ " square drive adapter and BA935 extension drive rod. BA975KS Electric Key Switch Traditional key operated switch with cover... Up-Down labeled cover plates also available in 1, 2, 3, 4 and 6 gang box options. Call for details. 14 www.bisoninc.com 800-247-7668http://www.bisoninc.com