Maradyne MM22K Mach Two dual electric fans Fits most GM cross-flow radiators with a minimum size of 23.5″ x 15.75″. Maradyne’s “Mach One” series of electric fans feature ‘S’ blades for quieter, more efficient operation. They have a 225 watt sealed motor making them dust and water resistant and allowing them to be sprayed clean. Maradyne does not use inferior polypropylene mixes, but only glass filled nylon giving their fans and housings the highest temperature and impact resistance on the market. A rubber seal isolates the fan from vibration and improves air flow through the shroud. Dimensions: 23.5″ x 15.75″ x 3.80″ deep Black Flows 2760 cfm @ 3.80 Maradyne MM22K Recommended wire harness (sold separately), Maradyne MFA100 (adjustable thermostat) Maradyne MFA102 (185̴�� temperature switch) Maradyne MFA103 (195̴�� temperature switch) with Maradyne MFA111 dual fan adapter.