Car Audio & Video. ProX XM-4U VaultX 4U Rack Air-tight, Water-sealed ABS Case. Condition: BRAND NEW IN ORIGINAL PACKAGING. ProX’s XM-4U VaultX series cases are made from an extremely tough Polypropylene Copolymer, these cases are crush resistant and virtually indestructible. This rugged case features a sealed ring, which makes it Airtight and Watertight. This state […]... Read More