Designed to meet the requirements of EPAās 6H Paint Rule (40 CFR 63 Subpart HHHHHH), the Excel Workstation is a controlled, all-in-one work environment for sanding, priming and limited painting . Shop air is drawn in by an intake pressuring fan, and it is then filtered through the ceiling filters ā trapping dust and contaminants,. Designed with 18-gauge, single-skin, pre-coated white panels, the structure can be freestanding (with structural steel supports) or suspended from your shop ceiling.