FM8 UNILET conduit outlet body made of graylon-iron. Smooth, rounded integral bushings in hubs protect conductor insulation. Accurately tapped, tapered threads for tight, rigid joints and excellent ground continuity. Completely interchangeable with Crouse-Hinds Form 8 bodies, gaskets and covers. Equivalent FM8 and Form 8* units have identical applications and installation dimensions. Flat back design provides greater cubic content for easier wire pulling, and more room for splicing. Fits flush and snug against flat surfaces for more stable installation. Covers with gaskets are approved for use in wet locations. Smooth hub bushings and cover openings protect conductor insulation. Smooth hub openings allow easy conduit joining.