Fisen’s solution offers a great multizone replacement option. Made to replace old units by: Carrier, Lennox, Trane, Nesbitt, Mammoth and others. This combination of JCI/Fisen make this a great opportunity to work in a new market Converts the super inefficient two deck multizone into a VAV reheat system for greatly improved energy savings, Matches the existing units roof curb for easy replacement without disturbing the roof Your market place has multizone replacements most markets do and these are great opportunities, you just have to look for them. We have been building these for 15 years with great success