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The London Archives will be closing for Christmas at 4.30pm on Tuesday 23 December 2025. We will reopen on Monday 5 January 2026 at 10am.

Funded and Managed by
City of London Corporation

Four flap folders

Designs for flat items

Four flap folders

The four-flap design is ideal for thin items like letters or small bundles of documents to separate them in a larger archive box. We use our 300 GSM card to create these folders - the lightweight but robust material means that your items are protected against agents of deterioration without adding excess bulk.

Four-flap folder in 300 gsm card, with full-length flaps
Protection and organisation inside archive boxes using a four flap folder

This design includes no closure mechanism, only the full-length sides to minimise the space and prevent uneven stress on neighbouring material.

A closed four-flap folder marked with the height, width and depth
How to measure for four flaps

Four-flaps are supplied flat packed.

How to order