Binding Spines Office Products A4 25 mm for 240 sheets, pack of 50, red

Office Products red binding spines for A4 documents, 25 mm width, pack of 50. Each spine is designed for comb binding systems and can accommodate up to 240 sheets of standard A4 paper. The product allows secure closure of punched documents and produces a clean, uniform finished edge suitable for reports, manuals and presentations. The bright red colour makes bound documents easy to identify and provides a consistent appearance for multi-page materials.

Advantages

These binding spines are compatible with standard comb binding machines and are made to hold thick documents securely while remaining simple to open and reclose when revisions are needed. The 25 mm width balances capacity and compactness, providing a firm spine without excessive bulk. Supplied in a pack of 50, they offer a consistent colour and finish for multiple projects and reduce the need to source spines individually.

Suitable for

• Binding reports and business proposals
• Producing manuals, handbooks and user guides
• Preparing presentations and training materials
• Organising student projects and academic submissions
• Creating internal documentation and archived records

Key specifications

• Format compatibility: A4 (210 × 297 mm)
• Spine width: 25 mm (suitable for up to 240 sheets of standard 80 g/m² paper)
• Colour: red
• Pack quantity: 50 spines
• Binding type: comb/spiral spine compatible with comb binding machines
• Material traits: durable plastic with flexible teeth for repeated opening and closing

How to use

Punch the A4 document pages using a comb binding machine matched to the spine pitch, align the punched pages on the machine’s pins, then place the comb spine over the opened comb and release to close. Ensure the spine width corresponds to the total sheet count; for documents approaching the 240-sheet limit, check alignment and closure before finalising. To make revisions, reopen the comb by spreading the teeth on the machine, add or remove pages as required, and reclamp the comb to secure the document.

Usage recommendations

For durable, professional results use standard 80 g/m² paper and verify hole punch alignment before inserting the comb. Store spines flat and away from direct heat or sunlight to prevent warping. When binding very thick sets, distribute heavier pages near the centre to reduce stress on the teeth and improve long-term hold.