Despite the negative reviews, this item is easy to install and works very well for hoisting roof-top boxes, kayaks, and canoes. I recommend first fastening 3 - 2"x6"x42" boards to the ceiling to simplify installation. This makes for a very sturdy installation, allows you to install parallel or perpendicular to the rafter direction, and eliminates the issue of rafter spacing. The center brackets accept 5/16" lag screws, and the pulley brackets accept 1/4" lag screws. I used 5/16" x 3-1/2" lags to fasten the 2"x6" boards to the ceiling rafters and 2" long lag screws to fasten the brackets to the boards. The vertical weight rating of the lag screws exceeds the weight rating of the Multilift.
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