The non-electrical subbase is made of heavy gauge steel to provide support for the wall sleeve. the subbase is designed to mount directly to the wall sleeve and contains adjustable legs from 3-1/4 in. to 5-1/2 in. (80 to 140 mm) for leveling, side filler panels and mounting holes for an electrical modules. it will accepts circuit fuse, power disconnect switch and conduit hardwire modules
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