Walk In Storage.

When the volume exceeds what cabinets hold sensibly, when items are bulky, or when people need to work inside rather than just retrieve from outside.

Walk-in units also allow internal segregation — separate zones or bunded areas within one secure envelope — which is difficult with individual cabinets.

Many are designed for lifting by forklift or crane, and some are collapsible for transport, which suits contractors moving between projects. Check the lifting points and empty weight before assuming.

The unit must be fully emptied before lifting, including anything in a sump.

Heavy-gauge construction, anti-jemmy door returns, concealed or protected hinges, and a high-specification lock in a shrouded housing. Provision to anchor the unit to a base matters as much as the lock.

For high-value contents, check whether your insurer specifies an attack-test standard.

For flammable or volatile contents, yes — permanent high and low level vents providing natural cross-flow. For general equipment storage, ventilation still helps by reducing condensation.

Vents blocked by stacked stock are a common finding and defeat the design entirely.

Firm and level, capable of carrying the loaded weight without settlement, with vehicle access for stocking. Uneven ground distorts the frame, which then prevents the doors closing and locking properly.

An impermeable base is also worth having under any unit holding liquids, as a second line of defence beneath the sump.

Only with proper internal segregation and separate containment. Sharing a single sump means a leak from one item can reach another, and mixing flammables with general stock complicates the fire risk assessment.

Where quantities justify it, separate units are simpler than partitioning one.