Patent ID: 9746230
Date: 2017-08-29
CPC Classifications: B60P,F25D

Claim:
1. A transport refrigeration unit for conditioning an atmosphere within an interior of a refrigerated cargo box, the transport refrigeration unit comprising: a transport refrigeration unit structural frame including a section to be attached to a front wall of the refrigerated cargo box; and a front cover for enclosing the transport refrigeration unit and supported by the structural frame, the front cover having a grille member to facilitate airflow over a condenser heat exchanger of the transport refrigeration unit; the front cover including a plurality of doors positioned adjacent to the grille member, wherein at least one of said plurality of doors having: a body having an inner sheet and an outer sheet with both of said inner sheet and said outer sheet having a peripheral edge; and a joint formed between the respective peripheral edges of said inner and outer sheets such that the respective peripheral edges are integrally bonded together to provide a cavity between said inner and outer sheets, wherein at least one of said inner sheet and said outer sheet is formed of a flame retardant material.