Great Lakes Air, GPS Heatless Regenerative, GPS-75-116-12D-HLN4, 12 VDC Controls. Hazardous Location Class-1 Devision-2 Group C&D (Z-Purge System) $12,006.00 – $30,791.60 Select options Great Lakes Air, GPS Heatless Regenerative, GPS-75-116-12D-N4, 12 VDC Controls. NEMA 4 Watertight Electrical. $6,961.00 – $25,746.60 Select options Great Lakes Air, GPS Heatless Regenerative, GPS-75-116-12D-N4X, 12 VDC Controls. NEMA 4X Exterior Installation Watertight Electrical. $7,668.00 – $26,453.60 Select options Great Lakes Air, GPS Heatless Regenerative, GPS-75-116-12D-N7, 12 VDC Controls. NEMA 7 Class 1 Devision 1 Group B,C,D Watertight NEMA 4 $1.00 – $32,635.60 Select options Great Lakes Air, GPS Heatless Regenerative, GPS-75-116-12D, 12 VDC Controls. NEMA 12 Rating. $6,650.00 – $25,435.60 Select options Great Lakes Air, GPS Heatless Regenerative, GPS-75-116-24D-HLN4, 24 VDC Controls. Hazardous Location Class-1 Devision-2 Group C&D (Z-Purge System) $12,006.00 – $30,791.60 Select options Great Lakes Air, GPS Heatless Regenerative, GPS-75-116-24D-HLN4, Pneumatic Controls. Hazardous Location Class-1 Devision-2 Group C&D (Z-Purge System) $2.00 – $32,973.60 Select options Great Lakes Air, GPS Heatless Regenerative, GPS-75-116-24D-N4, 24 VDC Controls. NEMA 4 Watertight Electrical. $6,961.00 – $25,746.60 Select options Great Lakes Air, GPS Heatless Regenerative, GPS-75-116-24D-N4, Pneumatic Controls. NEMA 4 Watertight Electrical. $9,143.00 – $27,928.60 Select options Great Lakes Air, GPS Heatless Regenerative, GPS-75-116-24D-N4X, 24 VDC Controls. NEMA 4X Exterior Installation Watertight Electrical. $7,668.00 – $26,453.60 Select options Great Lakes Air, GPS Heatless Regenerative, GPS-75-116-24D-N4X, Pneumatic Controls. NEMA 4X Exterior Installation Watertight Electrical. $9,850.00 – $28,635.60 Select options Great Lakes Air, GPS Heatless Regenerative, GPS-75-116-24D-N7, 24 VDC Controls. NEMA 7 Class 1 Devision 1 Group B,C,D Watertight NEMA 4 $1.00 – $32,635.60 Select options