Universal Heavy Duty Foldable Insulated Wall Sleeve for Standard PTAC 42" x 16" MERV stands for Minimum Efficiency

MERV stands for Minimum Efficiency Reporting Value

Control circuitry arranged to readily permit staging

Choose either manual ignition or electronic ignition

The smart electronic control board located in the air handling units controls the heater most efficiently based on your thermostat settings

Universal Heavy Duty Foldable Insulated Wall Sleeve for Standard PTAC 42" x 16" MERV stands for Minimum EfficiencyUniversal Foldable Wall Sleeve for Standard Size PTAC, 42" x 16" Packaged Terminal Air Conditioners and Packaged Terminal Air Conditoner Heat Pumps (PTAC and PTHP) are all in one heating and cooling units that are easy to install and use, but they do require a wall sleeve and a grille. The wall sleeve is used for PTAC thru the wall air conditioners, also sometimes called hotel type air conditioners or wall air conditioners. Industry standard wall