... cold room,freezing room FD flow air cooler with FreonTraits:1. the whole evaporator is galvanized, ... no rust,with long life span;2.high heat production coefficient ... , high cold production;3.with many sets of small fan, the wind is ... 5mm 8mm 10mm 12mmIt is siut for the refrigeration system with Freon, and also R404a, R134a and some ...