This speaker enclosure is for a Fountek FE87 full range driver. the mounting holes are for #4 screws. The 4 screws that hold the driver inside will need to be cut to a short length so they do not poke out through the front. The speaker box was tuned to a -3db frequency of 85Hz with a slight 2db peak at 110Hz. The enclosure was modeled using WinISD.

Driver link http://www.parts-express.com/fountek-fe87-3-full-range-driver-8-ohm--299-022

Back connector plate http://www.parts-express.com/round-speaker-wire-terminal-cup-spring-type--260-294

The speaker was printed at .3mm layer height and an infill of 20%

WARNING: This is a big print. The speaker is almost 500g so make sure you have enough filament!