We regularly supply pallet racking to cold storage / freezer facilities.
The racking generally doesn't need any modification if the temperatures are well below freezing but in some instances when the racking is needed in a chilled environment rather than a freezer the racking may need to be supplied in a galvanised finish to reduce the risk of corrosion from condensation.
For high density racking within large freezers, then maybe consider mobile pallet racking as this provides dense storage which maximises the available floor space but reduces the amount of wasted aisle space that needs chilling down.
Please discuss your needs with our experienced sales team.