Product Details:

• Center Attachment Arm Works With Cat. No. LL185 Wood's Lifter
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  CRL Ladder Lifter Center Arm Assembly is an optional that allows you to add a third cup to your Cat. No. LL185 Lifter for additional load stabilization. This adjustable center arm can be retrofitted on all Ladder Lifters produced after January 2007, and can be positioned in 2 inch (50.8 millimeters) increments vertically and 1/2 inch (12.7 millimeter) horizontally. Vacuum cup is not include. Cat. No. W4950 Vacuum Cup is available separately.