the present invention shown in fig1 one of the adjacent areas is a flash tunnel where voc 39 s and other substances are emitted from the painted article shortly after the spraying process has been completed and are then entrained in the supplied air in using a structure of this nature it has been found more efficient to remove the air from the flash tunnel by fan 88 through conduit 90 and on to plenum 92 the basic air flow evacuation system is retained by removing substance entrained air flow from the interior of spray booth 94 through a collecting means 96 like those previously discussed and on to the thermal oxidizer 98 through the action of fan 100 again a single or dual evacuation system may be used fig1 illustrates such a dual system the present invention has been extended to yet another even more efficient embodiment which is shown in fig1 and 18 here the adjacent areas have been extended to include flash tunnel 102 and oven 104 as the sprayed article dries at higher temperatures over a period of time the air surrounding the drying article is evacuated from oven 104 by fan 106 and moved back to flash tunnel 102 through conduit 108 air again is moved back to plenum 110 by fan 112 through conduit 114 air.