We offer three sizes to comfortably fit any size bug; Small (4”x6”), Medium (6”x8”), or Large (“8x10”). Measure the size of the specimen, and fit to size. We recommend a minimum of two inches of space from the nearest border (e.g. a 3.5” long, 1” wide beetle fits best in the small frame. Carefully preserve and ship us your specimens, and we will use our expert hands to do the rest.