Do not choose a unit from a “fits a one-bedroom flat” illustration unless your inventory actually matches it. One flat may contain a disassembled bed and stackable boxes; another may have a rigid sofa, dining table and fragile lamps. The awkward items usually determine the unit you need.
Make a packing list with dimensions
- Record each large item’s packed length, width and height, including handles and protective wrapping. Note what can be disassembled.
- Choose box sizes before estimating. Group books into smaller boxes so the weight remains manageable; count the boxes after packing where possible.
- Mark items that cannot carry weight. Do not count the space above a fragile item as usable stacking space without suitable shelving.
- Separate items needed during storage from things you will only collect at the end. Put the former within reach.
A box calculation you can copy
Suppose each packed box is 60 × 40 × 40cm. One layer of six boxes, arranged three across and two deep, occupies 1.8 × 0.8m = 1.44m², about 15.5sq.ft. Two layers hold 12 boxes at 80cm high. That is the box footprint only: add clearance, an access aisle if needed, and any space lost to columns or the door. Check that the boxes can safely bear the load.
Ask what the advertised area measures
Request internal dimensions for the exact available unit, not just a size category. RedBox’s size disclaimer says website dimensions are for reference. A floor plan and tape measure are more useful than converting an advertised gross area into a guessed usable area.
- Door: measure the clear opening with the door fully open, not the outside frame.
- Route: check building entrance, lift door, lift cabin and corners. Ask whether the goods lift can be booked.
- Height: identify beams, pipes and the operator’s maximum stacking line; do not obstruct fire-safety equipment or passageways.
- Use: if you will pick orders or visit weekly, lay out the access aisle before filling every corner.
For a borderline fit, ask to view the actual unit or provide a packing sketch before paying. Confirm the cost and availability of moving to a larger unit if the first estimate fails. A possible future upgrade is not a reservation of the next size.