Islandaire EZ Series FM is “The Perfect Fit” replacement for the Slant Fin model FM unit. Our commercial duty construction with heavy gauge galvanized steel and superior components create an efficient reliable unit.“The Perfect Fit” design eliminates the need for any interior or exterior renovation. Use of the existing wall sleeve-cabinet and louver saves time and money, two very important factors in today’s competitive environment! If the need does occur where the wall sleeve-cabinet, hydronic coil and/or louver needs to be replaced, we manufacture these accessories as well.