reefer unit

reefer unit for homemade 1/14 scale trailer check sizes before printing as i used my own trailer to scale and haven't printed it yet .please post in comments if there is a problem .mounting is by 4 3mm screws or thats how i hope it will mount EDIT finally printed it and the holes for mounting are about 3.2 mm so will need gluing or use fatter screws i might re upload again with smaller hole size later if i get chance