Self Locking Book Mailers
Self locking book mailer
Upgrade your dispatch process with reliable, professional postal mailers designed specifically for direct-to-door delivery.
Trojan self-locking die-cut cardboard boxes provide dependable edge-to-edge protection without bulky over-packaging.
Convenient Letterbox Fit
Nobody likes missed delivery cards. The slim profile of the Small and Medium boxes is engineered to drop through standard UK front door letterboxes, giving your customers frictionless delivery on arrival.
For bulkier orders, multiple books, or chunkier items, the 50 mm Large box offers generous extra depth.
Internal Dimensions (L x W x D)
C5 Small: 242 × 175 × 21 mm (Ideal for paperbacks, A5 stationery, single comic issues, phone cases, and small gifts)
C4 Medium: 324 × 230 × 21 mm (Fits A4 prints, comic runs with backing boards, graphic novels, and slimline tablets)
C4 Deep Large: 322 × 229 × 50 mm (Extra 50 mm depth for thick hardback books, multi-pack orders, and deeper retail products)
Fast Assembly & Clean Presentation
Featuring precision pre-scored crease lines and an integrated half-circle locking tab.
Simply fold the sides, seat the flap, and slide your items inside.
Clean White and rustic Kraft boards accept adhesive labels, thermal courier stickers, and custom ink stamps effortlessly.
Trojan self-locking die-cut cardboard boxes provide dependable edge-to-edge protection without bulky over-packaging.
Convenient Letterbox Fit
Nobody likes missed delivery cards. The slim profile of the Small and Medium boxes is engineered to drop through standard UK front door letterboxes, giving your customers frictionless delivery on arrival.
For bulkier orders, multiple books, or chunkier items, the 50 mm Large box offers generous extra depth.
Internal Dimensions (L x W x D)
C5 Small: 242 × 175 × 21 mm (Ideal for paperbacks, A5 stationery, single comic issues, phone cases, and small gifts)
C4 Medium: 324 × 230 × 21 mm (Fits A4 prints, comic runs with backing boards, graphic novels, and slimline tablets)
C4 Deep Large: 322 × 229 × 50 mm (Extra 50 mm depth for thick hardback books, multi-pack orders, and deeper retail products)
Fast Assembly & Clean Presentation
Featuring precision pre-scored crease lines and an integrated half-circle locking tab.
Simply fold the sides, seat the flap, and slide your items inside.
Clean White and rustic Kraft boards accept adhesive labels, thermal courier stickers, and custom ink stamps effortlessly.
£9.18 - £18.21
Description
Additional information
Dimensions
LETTERBOX FIT
Nobody likes missed delivery cards. The slim profile of the Small and Medium boxes is engineered to fit through standard UK front door letterboxes, giving your customers a smooth, hassle-free delivery experience.
For bulkier orders, multiple books, or chunkier items, the 50 mm Large box offers generous extra depth.
Nobody likes missed delivery cards. The slim profile of the Small and Medium boxes is engineered to fit through standard UK front door letterboxes, giving your customers a smooth, hassle-free delivery experience.
For bulkier orders, multiple books, or chunkier items, the 50 mm Large box offers generous extra depth.
Upgrade Your Dispatch Process with Reliable Postal Mailers
Reliable, professional postal mailers designed specifically for direct-to-door delivery.
Trojan self-locking die-cut cardboard boxes provide dependable edge-to-edge protection without bulky over-packaging.
Reliable, professional postal mailers designed specifically for direct-to-door delivery.
Trojan self-locking die-cut cardboard boxes provide dependable edge-to-edge protection without bulky over-packaging.
| Code | Dimensions mm (LxWxH) | Size Guide | Colour | Pack Size | 1-4 Packs | 5-9 Packs | 10-19 Packs | 20+ Packs | Qty | |
|---|---|---|---|---|---|---|---|---|---|---|
| 9417_25 | 242 x 175 x 21 | Self Locking C5 | Kraft | 25 | £10.28 | £9.97 | £9.67 | £9.18 | ||
| 9417_25_W | 242 x 175 x 21 | Self Locking C5 | White | 25 | £10.28 | £9.97 | £9.67 | £9.18 | ||
| 9418_25 | 324 x 230 x 21 | Self Locking C4 | Kraft | 25 | £15.83 | £15.35 | £14.89 | £14.14 | ||
| 9418_25_W | 324 x 230 x 21 | Self Locking C4 | White | 25 | £15.83 | £15.35 | £14.89 | £14.14 | ||
| 9419_25 | 322 x 229 x 50 | Self Locking C4 Deep | Kraft | 25 | £18.21 | £17.66 | £17.13 | £16.27 | ||
| 9419_25_W | 322 x 229 x 50 | Self Locking C4 Deep | White | 25 | £18.21 | £17.66 | £17.13 | £16.27 |
6 variations
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Dimensions mm (LxWxH)
Size Guide
Colour
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1-4 Packs
5-9 Packs
10-19 Packs
20+ Packs
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