90maz
+1y
Just build a panel thats the same size at the end of the box out of 1/4 inch mdf or any wood you have avalable. Then wrap the box starting at the bottom and ending at the bottom. Then wrap the side peaces and glue them on or screw them on were you cant see the screws. I cant tell if you have room on the sides but if you do i'd ues a peace of 1/2 inch and round the sides with a router it will look a little cleaner.,,,,,,,,,,, If you have the skill you can take the same 1/4 inch side peace cut it to the size of the side of the box then cut a 1/2 inch off each side of the side peace. Find a roll of 3M dubble sided tape wrap the edge of the 1/4 inch peace then screw it on the side centerd. Next bondo the edge of the box in the 1/2 inch gap around the the side peace till its level. Then sand the bondo and make it rounded. After that unscrew the side peaces pull the tape off wrap the box and side peace. If you have any ? im me i'll work you through it. Here's some pics that might help?I just put carpet on the sides of that box insted of using the inserts but you should get the idea of the bondo on the edge.