The Gurin DHMD-310 is one of three dehumidifiers that Gurin manufacturers. It is the largest, most “heavy duty” of the three. The DHMD-210 is also a thermo-electric dehumidifier, like the DHMD-310, but it’s much lighter duty and removes much less moisture per day. The DHMD-110 is even more light duty and, unlike the DHMD-310 and DHMD-210, uses adsorption (instead of the Peltier technology used in thermo-electric dehumidifiers) to facilitate dehumidification.