The front grill is required for the four way ceiling cassette units. This grille will fit LCN series units. The LCN ceiling cassettes are used with the LG Single Zone Systems.
The PT-UMC1 is about 37.5" x 37.5" and covers the inner working of the ceiling cassette unit as well as the ceiling cut-out. Air flow is directed through the grille cover.
Replacement of malfunctioning Product and Parts for one (1) year from the date of original installation.