Customizable solutions to meet any customer need. Two models utilizing Hydrophobic GORE® filter. Two models with MERV 12, pleated filter. Standard power input: 48 VDC. UL Listed to save time and money with agency approvals. Power Cord included. Easy to replace filters. Broad operating temperature range -40 C to 55 C. Every unit functionally tested before shipping. Controller provides fan speed control and temperature alarm.