Great Lakes Air, GPS Heatless Regenerative, GPS-500-116-12D-HLN4, 12 VDC Controls. Hazardous Location Class-1 Devision-2 Group C&D (Z-Purge System) $18,924.00 – $62,220.41 Select options Great Lakes Air, GPS Heatless Regenerative, GPS-500-116-12D-N4, 12 VDC Controls. NEMA 4 Watertight Electrical. $13,879.00 – $57,175.41 Select options Great Lakes Air, GPS Heatless Regenerative, GPS-500-116-12D-N4X, 12 VDC Controls. NEMA 4X Exterior Installation Watertight Electrical. $14,586.00 – $57,882.41 Select options Great Lakes Air, GPS Heatless Regenerative, GPS-500-116-12D-N7, 12 VDC Controls. NEMA 7 Class 1 Devision 1 Group B,C,D Watertight NEMA 4 $20,768.00 – $64,064.41 Select options Great Lakes Air, GPS Heatless Regenerative, GPS-500-116-12D, 12 VDC Controls. NEMA 12 Rating. $13,568.00 – $56,864.41 Select options Great Lakes Air, GPS Heatless Regenerative, GPS-500-116-24D-HLN4, 24 VDC Controls. Hazardous Location Class-1 Devision-2 Group C&D (Z-Purge System) $18,924.00 – $62,220.41 Select options Great Lakes Air, GPS Heatless Regenerative, GPS-500-116-24D-HLN4, Pneumatic Controls. Hazardous Location Class-1 Devision-2 Group C&D (Z-Purge System) $21,106.00 – $64,402.41 Select options Great Lakes Air, GPS Heatless Regenerative, GPS-500-116-24D-N4, 24 VDC Controls. NEMA 4 Watertight Electrical. $13,879.00 – $57,175.41 Select options Great Lakes Air, GPS Heatless Regenerative, GPS-500-116-24D-N4, Pneumatic Controls. NEMA 4 Watertight Electrical. $16,061.00 – $59,357.41 Select options Great Lakes Air, GPS Heatless Regenerative, GPS-500-116-24D-N4X, 24 VDC Controls. NEMA 4X Exterior Installation Watertight Electrical. $14,586.00 – $57,882.41 Select options Great Lakes Air, GPS Heatless Regenerative, GPS-500-116-24D-N4X, Pneumatic Controls. NEMA 4X Exterior Installation Watertight Electrical. $16,768.00 – $60,064.41 Select options Great Lakes Air, GPS Heatless Regenerative, GPS-500-116-24D-N7, 24 VDC Controls. NEMA 7 Class 1 Devision 1 Group B,C,D Watertight NEMA 4 $20,768.00 – $64,064.41 Select options