Great Lakes Air, GPS Heatless Regenerative, GPS-250-116-12D-HLN4, 12 VDC Controls. Hazardous Location Class-1 Devision-2 Group C&D (Z-Purge System) $14,957.00 – $41,941.65 Select options Great Lakes Air, GPS Heatless Regenerative, GPS-250-116-12D-N4, 12 VDC Controls. NEMA 4 Watertight Electrical. $9,912.00 – $36,896.65 Select options Great Lakes Air, GPS Heatless Regenerative, GPS-250-116-12D-N4X, 12 VDC Controls. NEMA 4X Exterior Installation Watertight Electrical. $10,619.00 – $37,603.65 Select options Great Lakes Air, GPS Heatless Regenerative, GPS-250-116-12D-N7, 12 VDC Controls. NEMA 7 Class 1 Devision 1 Group B,C,D Watertight NEMA 4 $16,801.00 – $43,785.65 Select options Great Lakes Air, GPS Heatless Regenerative, GPS-250-116-12D, 12 VDC Controls. NEMA 12 Rating. $9,601.00 – $36,585.65 Select options Great Lakes Air, GPS Heatless Regenerative, GPS-250-116-24D-HLN4, 24 VDC Controls. Hazardous Location Class-1 Devision-2 Group C&D (Z-Purge System) $14,957.00 – $41,941.65 Select options Great Lakes Air, GPS Heatless Regenerative, GPS-250-116-24D-HLN4, Pneumatic Controls. Hazardous Location Class-1 Devision-2 Group C&D (Z-Purge System) $17,139.00 – $44,123.65 Select options Great Lakes Air, GPS Heatless Regenerative, GPS-250-116-24D-N4, 24 VDC Controls. NEMA 4 Watertight Electrical. $9,912.00 – $36,896.65 Select options Great Lakes Air, GPS Heatless Regenerative, GPS-250-116-24D-N4, Pneumatic Controls. NEMA 4 Watertight Electrical. $12,094.00 – $39,078.65 Select options Great Lakes Air, GPS Heatless Regenerative, GPS-250-116-24D-N4X, 24 VDC Controls. NEMA 4X Exterior Installation Watertight Electrical. $10,619.00 – $37,603.65 Select options Great Lakes Air, GPS Heatless Regenerative, GPS-250-116-24D-N4X, Pneumatic Controls. NEMA 4X Exterior Installation Watertight Electrical. $12,801.00 – $39,785.65 Select options Great Lakes Air, GPS Heatless Regenerative, GPS-250-116-24D-N7, 24 VDC Controls. NEMA 7 Class 1 Devision 1 Group B,C,D Watertight NEMA 4 $16,801.00 – $43,785.65 Select options