Crouse-Hinds GUAM16, 1/2″ Hub, Iron, M-Type, Explosionproof Conduit Box, 1pc. Crouse-Hinds GUAW26, 3/4″ Hub, Iron, W-Type, Explosionproof Conduit Box, 1pc. We have new products in manufacturer boxes, as well as loose and shelf-worn quality products to save you even more money.