... 4.Inner parts are original 5.Desgin customized back exhaust air spray paint booth WALL PANEL EPS heat prevervation ... ,thickness :50MM ,roof pannel :galvanized platePIT Without basement ,exhaust air from 2 rows of pitMAIN /PERSONAL Door 3-fold ... Filter(Ceiling Filter) Floor Filte, M-shape activated Exhaust Carbon Filter, Exhaust Fiber glass replaced by level sideCONTROL SYSTEM Spraying, Risen ...