Vent Cap for Harbor Freight 40lb Blast Cabinet

If you are reversing the air flow in your HF 40lb blast cabinet then you can use this cap to block off the top of the vent on the back panel to force the air to be pulled from the bottom of the cabinet.  And if you are not reversing the air flow, this will force the fresh air to come into the lower area of the blast cabinet and more effectively pull the dust away.

This can easily be added after the cabinet has been assembled.  It is a friction fit and just drops into place with a little force.

I printed it in PETG, .2 layer height, 3 perimeters, 15% infill.