Why is there an indented lip on the front bottom of your enclosures? I noticed you have instructions in the FAQ section of your website on how to seal the area with spray foam.
The bottom and top lip are part of the molding process and allow for the door track to be installed. For us to fill in the lip with material it would increase the weight and cost. For most people this lip is not an issue but for others it can be, so we do suggest filling it in if you're in the later category.