Replacing Storage Inserts

[durangod]

Hi, I am having to cut the bottom of my storage/cooler inserts out to get access to the old open cell foam to remove and replace it. I plan on patching the bottom of the insert but i would like to find a replacement insert that i can use to cover up the work i did. In other words i would like to find something to slide inside the OEM storage/cooler insert. It does not have to be designed as a marine insert, anything that is close to the size will work. Has anyone done this before?

The OEM insert is approx (inches) 16 3/4 L x 11 3/4 W x 16 D I am even looking at anything from walmart or some other plastic box that will fit. Has anyone here found a good OEM or non OEM source that has worked well for this purpose?

Thanks