Universal Heavy Duty Foldable Insulated Wall Sleeve for Standard PTAC 42" x 16" exclude-from-data-feed Bypass configuration does not add

Bypass configuration does not add static pressure to the HVAC system

This is important because dangerous lung-penetrating particles are often smaller than

Suitable for applications with refrigerants R-410A

Multiple stage circuit capability

Universal Heavy Duty Foldable Insulated Wall Sleeve for Standard PTAC 42" x 16" exclude-from-data-feed Bypass configuration does not addUniversal 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