I have a DeeBlast cabinet, which looks much like yours. I put casters on it also, so it can be wheeled out of the garage when using. I'm in So Calif, where it almost never rains, so this is rarely a problem. Blasting outside keeps dust out of the garage. I need to rig up a dust collection system. My machine uses a sock and squirrel cage to catch dust. A bit primitive, eh?