For units that will be placed inside, they will be a separate room all to themselves. Finding the right size unit to fit the available space may be a bit of a chore. Whether installing a walk-in in an existing building or during the construction phase of a new building, you will want to take into account the compressor size and location as well as the overall size of the unit. Remember that each wall has about four inches of insulation, so the interior dimensions will be slightly smaller than the exterior. Take this into account when estimating the storage space you need.
Another consideration to keep in mind when searching for a walk-in cooler is whether you need it to come with a floor or not, they can come either way. The floors that come with the unit are usually a grooved or textured metal. Many establishments opt to lay their own tile floors inside the walk-ins for a more customized look, or to match the flooring of the rest of the kitchen.