Great Lakes Air, GPS Heatless Regenerative, GPS-1800-116-12D-HLN4, 12 VDC Controls. Hazardous Location Class-1 Devision-2 Group C&D (Z-Purge System) $37,163.00 – $147,505.71 Select options Great Lakes Air, GPS Heatless Regenerative, GPS-1800-116-12D-N4, 12 VDC Controls. NEMA 4 Watertight Electrical. $32,118.00 – $142,460.71 Select options Great Lakes Air, GPS Heatless Regenerative, GPS-1800-116-12D-N4X, 12 VDC Controls. NEMA 4X Exterior Installation Watertight Electrical. $32,825.00 – $143,167.71 Select options Great Lakes Air, GPS Heatless Regenerative, GPS-1800-116-12D-N7, 12 VDC Controls. NEMA 7 Class 1 Devision 1 Group B,C,D Watertight NEMA 4 $39,007.00 – $149,349.71 Select options Great Lakes Air, GPS Heatless Regenerative, GPS-1800-116-12D, 12 VDC Controls. NEMA 12 Rating. $31,807.00 – $142,149.71 Select options Great Lakes Air, GPS Heatless Regenerative, GPS-1800-116-24D-HLN4, 24 VDC Controls. Hazardous Location Class-1 Devision-2 Group C&D (Z-Purge System) $37,163.00 – $147,505.71 Select options Great Lakes Air, GPS Heatless Regenerative, GPS-1800-116-24D-HLN4, Pneumatic Controls. Hazardous Location Class-1 Devision-2 Group C&D (Z-Purge System) $39,345.00 – $149,687.71 Select options Great Lakes Air, GPS Heatless Regenerative, GPS-1800-116-24D-N4, 24 VDC Controls. NEMA 4 Watertight Electrical. $32,118.00 – $142,460.71 Select options Great Lakes Air, GPS Heatless Regenerative, GPS-1800-116-24D-N4, Pneumatic Controls. NEMA 4 Watertight Electrical. $34,300.00 – $144,642.71 Select options Great Lakes Air, GPS Heatless Regenerative, GPS-1800-116-24D-N4X, 24 VDC Controls. NEMA 4X Exterior Installation Watertight Electrical. $32,825.00 – $143,167.71 Select options Great Lakes Air, GPS Heatless Regenerative, GPS-1800-116-24D-N4X, Pneumatic Controls. NEMA 4X Exterior Installation Watertight Electrical. $35,007.00 – $145,349.71 Select options Great Lakes Air, GPS Heatless Regenerative, GPS-1800-116-24D-N7, 24 VDC Controls. NEMA 7 Class 1 Devision 1 Group B,C,D Watertight NEMA 4 $39,007.00 – $149,349.71 Select options