SL1 Letterbox

235 x 190 x 22 mm
Out of stock - 0 LEFT
This letterbox friendly e-com mailbox is perfect for getting your products through customers letterboxes, reducing failed deliveries and product damage. Royal Mail 'Large Letter' tariff compliant. Strong doormat friendly design. Perfect for health & beauty, skin care, A5 sized prints, photography, diaries, sanitary items or other A5 sized contents. For assembly instructions - please click here.
Looking for letterbox sized packaging? This letterbox friendly e-com mailbox is the ultimate letterbox-fitting packaging option. The SL1 letterbox cardboard packaging provides a fantastic option for fitting plenty of products through customers letterboxes - around 90% of letterboxes in the UK to be exact.  This means you can benefit from far fewer 'failed deliveries', and plenty of happy customers!  This letterbox friendly example is also Royal Mail 'Large Letter' tariff compliant. Our research tells us that almost 95% of UK letterboxes are at least 254mm (10 inches) wide and 38mm (1.5 inches) high. We have made sure that every item in our Lil Letterbox postal packaging range fits this 254 x 38mm range. Perfect for health & beauty, skin care, A5 sized prints, photography, diaries, artwork, crafts, sanitary items or other A5 sized contents. Featuring our market-leading hot melt peel'n'seal / red-tear-strip combination, using strong cardboard material with 100% green recyclable credentials. Beware of pale imitations and cheap, 'clipfast-tray' style A5 size packaging boxes.

Confirmed deliveries every time without the need for recipients to be present.

This letterbox friendly e-com mailbox range fits through most standard size UK letterboxes.

The strong design of this letterbox cardboard packaging is doormat friendly.

Hinged lid for extra wow factor, with secure seal. Hot melt adhesive gives the best, tight seal - at least twice the strength of standard double-sided tape.

Environmentally friendly, 100% recyclable.

Problems with storage? At Lil packaging, we hold vast quantities of Lil letterboxes in stock for your convenience.


Your packaging is the first time that your customers physically experience your product. Getting it right is your chance to make the best first impression. We help you do just that.

With a clear understanding of what you need, we use our knowledge and expertise to guide you to the most appropriate solutions. It's about unrivalled service. Over 98% of our orders are dispatched within 24 hours. Getting valuable products safely to your customers without compromising on costs wasn't easy, until now...

Color Brown Corrugated
Flap Type Hotmelt Peel & Seal with red rip strip opening
Height 22
Internal Width MM 235
Width (mm) 201 - 300
Internal Length MM 190
Length (mm) 151 - 200
Internal Height MM 22
Height (mm) 0 - 100
Internal Width Inches 9.2
Internal Length Inches 7.5
Internal Height Inches .8
Item Weight (g) 57
Quantity per Box/Pack 100
Quantity per pallet 6450
Width 235
  • 100% recyclable

  • easy open tear strip

  • fits large letter

  • fits letterbox

  • FSC® certified products

  • peel 'n' seal