Carlon 6 in. x 6 in. x 4 in. Gray PVC Junction Box E987RR - The Home Depot
Junction Box Waterproof ,Outdoor Junction Box, Waterproof Electrical Junction Box, IP68, 2 Way M20 coaxial Cable Connector Wire Range from 4 to 12mm, Black - Amazon.com
Electrical Junction Box
Stainless Steel Industrial Terminal and Junction Boxes | nVent
Mini Terminal Junction Box
Terminal Junction Box - Motor Junction Box | M-Tech Control
Standard enclosures and junction boxes
Cantex 4 in. Round Junction Box R5133690 - The Home Depot
DJC Supply Co. 4" x 4" x 3" PVC Plastic Junction Conduit Box with Pre Molded 3/4" & 1/2" Conduit Holes, Easy to knock out covers, Metal screws - Amazon.com