i need some help on a sub box i am building

[codyta94]

okay so i have a single cab silverado with a cut through done and i am building a sub box in the bed of the truck the thing i need help on is i have the front of the box where the subs mount in set a little so i can put a front over the box with a port hole going into the cab but my only problem is i want to make a detachible front so that way if any thing goes wrong with the subs so i can get to them with out having to cut the box apart any info would help me out alot oh and the box has to be waterproof to so i am having it rhino lined

here is link to photos

http://m1305.photobucket.com/profile/codyta94?pbauth=1_uLEBonVPfaLdh1h3YMYz2buPmqwPAchKUH8iaKRPcErriNzdkVVEDjSpaPqvs35VqUmMzac61EPHzTN%2FXdC8H6GZAmH%2Fz24IzwAZC8c8XqJet2NZZ2evjpqH2weM%2BHWX34EY9aMAsWwGLiXDoFRiQj57LUzT9tS42nxjlhQHgF4%3D