This Dual High Output RAD Fan Assembly allows true Dual Fan performance in a package the size of others Single shrouded fans. Featuring an aluminum shroud measuring a tidy 24\" wide by 15 1/2\" top to bottom and only 4 1/2\" in overall depth to offer an adjustable yet precision fit, it uses two IP-68 certified waterproof/dustproof 11\" electric fans to provide a powerful one-two 3750 cfm punch to a hot engine. The natural, non-finished aluminum shroud gives the user the freedom to polish, anodize, paint, or simply leave it raw to create a truly custom look at a reasonable price.