Mitsubishi PVA-AA18NL 18,000 BTU Multi-Position Air Handler - R454BThe Mitsubishi 18,000 BTU P Series Multi Position ducted air handler provides a solution to cool and heat zones in commercial spaces, or residential homes that need more capacity. It is unique in that it can be installed either vertically or horizontally. The PVA AA18NL has selectable external static pressure: 0. 30, 0. 50 and 0. 80 in. WG with 3 fan speeds at each static setting. It also has a 1 inch R4. 2 fiberglass free insulation that reduces