Good morning guys, as a hobbyist I like the telescoping covers and especially the design by Honeyrunapiaries. I have modified them some as the sides are around five inches high. The insulation is covered with 14" plywood on both sides and the bottom plywood is 3/8" up from the bottom edge to allow for a slotted upper entrance on a narrow end about 3/8" x 3". I also rotate the boxes for winter and summer use, although I put cleats over most of the ventilation holes for winter. For winter use there is just one 3/4" hole on one end and sloped to give them an upper entrance during the winter. The telescoping covers have 1x2 frames all around and then are covered with a galvanized telecoping cover over the wood. Here one can us plywood or whatever. One of the things that I like to do on the bottom of the telescoping covers is to run a Kerf on the table saw before assembly to give it a drip edge. I have been thinking that if I will have to make several the next time, I will cut them from wider boards with the Miter Lock and then rip them to size. This should be quick and simple to assemble and last forever. Oh well, thats just me, I'll do things the hardest way I can think of and that keeps me away from the "Stupid Box". Take care and have fun