• Rigid Case Construction - an interior endoskeleton provides
structural support eliminating screw heads protruding from the side of the cabinet that could damage property when being installed. • Cabinet -
Constructed of heavy gauge galvanized steel with a primer and finish coat providing a high quality corrosion resistant finish. • MaxAlloy Coil - Long
life aluminum coils built to deliver lasting performance, efficiency and reliability. • Foil faced insulation - The entire cabinet is insulated with
a single piece of cleanable foil faced insulation retained by the endoskeleton. The cabinet design is such that all edges of the insulation are
contained. • Electronic Expansion Valve (EEV) - Factory installed and sized to match with specific HL20 and AL21 high-efficiency variable capacity
outdoor units. • Compact Cabinet - With the coil and access doors removed the cabinet has a 20.5” casing depth in all models, which provide ease of
attic access and space constrained applications. • Thermoset Drain Pan - Corrosion and UV resistant with a positive slope for proper drainage. Low
water retention design maximizes indoor air quality and consumer comfort. • Low Leakage Cabinet Design - Fully gasketed doors minimizes air leakage
to no more than 2% when measured at 1.0” esp. minimizing conditioned air leakage and infiltration. • Integrated Filter Rack - All models have an
internal filter rack for use with 1” thick standard size filters. • Electric Heat Kits - 208/230V single and three phase field installed electric
heat kits are available from 5 through 25 kW. Make sure to check the technical guide for proper application. Electric heat kits are common between
the different air handler families including the modular designs. • ECM Variable Speed Motors - All models use variable speed ECM motors for
efficient, quiet operation. The blower can be independently controlled to optimize the system for specific comfort requirements. • Duct Flange - Duct
flanges are supplied to be field installed when required.