Snafu if you have an insulated trailer you do not need to put styrofoam between the product and wall, it does have to be skidded. We can maintain over 55 no problem but heaters generally do not have heat trackers attached to them, a lot of companies put temp tails in or their own electronic measuring gauges. We do lane studies every year and can show how it works to customers. The only true control is on a reefer.The other consideration is airflow. You can't have the load tight against the wall or you're not going to have the airflow needed to maintain the temp.
If it's on pallets you're ok with the bottom but you're still going to need to put some stryofoam or something between the product and the wall for the sides.
I'm going to have to disagree with you. I've seen reefer walls develop frost on them in the winter because of a lack of airflow down the sides when the box was set for 68°F.Snafu if you have an insulated trailer you do not need to put styrofoam between the product and wall, it does have to be skidded. We can maintain over 55 no problem but heaters generally do not have heat trackers attached to them, a lot of companies put temp tails in or their own electronic measuring gauges. We do lane studies every year and can show how it works to customers. The only true control is on a reefer.