Variants of a mold are catalogued separately, so each one has its own sets and minifigs. Check these too if something you expect is missing here.

• upn0103pr0001 HO Scale Mercedes Refrigerated Trailer, Twin Axle, 'Interfrigo' and White Snowflakes Print this part is a pair of it
• upn0103pr0002 HO Scale Mercedes Refrigerated Trailer, Twin Axle, 'Interfrigo' and Blue Snowflakes Print this part is a pair of it
• upn0103pr0003 HO Scale Mercedes Refrigerated Trailer, Twin Axle, Red Animal Symbols and Snowflakes Print this part is a pair of it
• upn0103pr0004 HO Scale Mercedes Refrigerated Trailer, Twin Axle, Gray Animal Symbols and Snowflakes Print this part is a pair of it
• upn0103pr0005 HO Scale Mercedes Refrigerated Trailer, Twin Axle, 'Philips' Print this part is a pair of it
• upn0157pr0001 HO Scale Mercedes Refrigerated Trailer, Single Axle, 'Interfrigo' and Blue Snowflakes Print this part is a pair of it
• upn0157pr0002 HO Scale Mercedes Refrigerated Trailer, Single Axle, 'Interfrigo' and White Snowflakes Print this part is a pair of it