Materials required are plywood for the top, sides, and floor of the box; metal (or wooden) bars for the plate support grid; cabinet hardware for the hinges, latches, and handle of the door, and the major electrical components: the fan blade and motor and associated wiring and an on/off switch.  Some foam rubber weatherstripping will be necessary for closing gaps around the door so rosin dust won't blow out when the fan is running, and some aluminium flashing for rounding the corners formed where the floor and the walls of the box meet, so rosin powder won't pile up in the corners. Also whatever glue, screws, etc. may be necessary.  I have built these with 5/8 in plywood joined with drywall screws, but details of construction will depend on the size of the box, available materials, and the tastes of the builder.

A box based on this design has been in use since about 1986 at Island International Artists, a printmaking and distribution facility located on Guemes Island in northern Puget Sound.