Browse our full range of cardboard postal boxes in the table below. We have a wide range of Royal Mail postal boxes in a variety of sizes to suit any item you need to be posted. Read our handy packaging guide if you need help understanding Royal Mail parcel sizes.
Box Size
(LxWxH)
Image
Product Info
Boxes Per Pack
Price Per box (ex. VAT)
1-11 Packs
12-19 Packs
20+ Packs
1 Pallet
Number of
Boxes
Single Wall Cardboard Box
4 x 4 x 4"
Single Wall Cardboard Box
10.2 x 10.2 x 10.2cm
Single Wall Cardboard Box
101.6 x 101.6 x 101.6mm
50
Single Wall Cardboard Box
4 x 4 x 8"
Single Wall Cardboard Box
10.2 x 10.2 x 20.3cm
Single Wall Cardboard Box
101.6 x 101.6 x 203.2mm
50
24.1p
23.1p
22.1p
Double Wall Cardboard Box
4 x 4 x 13"
Double Wall Cardboard Box
10.2 x 10.2 x 33cm
Double Wall Cardboard Box
101.6 x 101.6 x 330.2mm
15
Single Wall Cardboard Box
5 x 5 x 2.5"
Single Wall Cardboard Box
12.7 x 12.7 x 6.4cm
Single Wall Cardboard Box
127 x 127 x 63.5mm
50
Single Wall Subscription Box (Brown)
5.5 x 4.4 x 1.3"
Single Wall Subscription Box (Brown)
14 x 11.2 x 3.3cm
Single Wall Subscription Box (Brown)
139.7 x 111.8 x 33mm
50
20.2p
19.2p
18.2p
Single Wall Subscription Box (White)
5.5 x 4.4 x 1.3"
Single Wall Subscription Box (White)
14 x 11.2 x 3.3cm
Single Wall Subscription Box (White)
139.7 x 111.8 x 33mm
50
20.9p
19.9p
18.9p
Single Wall Subscription Box (Brown)
5.5 x 8.8 x 1.3"
Single Wall Subscription Box (Brown)
14 x 22.4 x 3.3cm
Single Wall Subscription Box (Brown)
139.7 x 223.5 x 33mm
50
26.7p
25.7p
24.7p
Single Wall Subscription Box (White)
5.5 x 8.8 x 1.3"
Single Wall Subscription Box (White)
14 x 22.4 x 3.3cm
Single Wall Subscription Box (White)
139.7 x 223.5 x 33mm
50
27.8p
26.8p
25.8p
Single Wall Cardboard Box
6 x 4 x 3"
Single Wall Cardboard Box
15.2 x 10.2 x 7.6cm
Single Wall Cardboard Box
152.4 x 101.6 x 76.2mm
50
25.4p
24.4p
23.4p
Single Wall Cardboard Box
6 x 4 x 4"
Single Wall Cardboard Box
15.2 x 10.2 x 10.2cm
Single Wall Cardboard Box
152.4 x 101.6 x 101.6mm
50
21.1p
20.1p
19.1p
Double Wall Cardboard Box
6 x 5 x 4"
Double Wall Cardboard Box
15.2 x 12.7 x 10.2cm
Double Wall Cardboard Box
152.4 x 127 x 101.6mm
15
58.3p
54.9p
51.6p
Single Wall Cardboard Box
6 x 5 x 4"
Single Wall Cardboard Box
15.2 x 12.7 x 10.2cm
Single Wall Cardboard Box
152.4 x 127 x 101.6mm
50
Single Wall Cardboard Box
6 x 6 x 6"
Single Wall Cardboard Box
15.2 x 15.2 x 15.2cm
Single Wall Cardboard Box
152.4 x 152.4 x 152.4mm
50
Single Wall Cardboard Box
7 x 5 x 2.5"
Single Wall Cardboard Box
17.8 x 12.7 x 6.4cm
Single Wall Cardboard Box
177.8 x 127 x 63.5mm
50
Single Wall Lidded Box
7 x 5 x 2.5"
Single Wall Lidded Box
17.8 x 12.7 x 6.4cm
Single Wall Lidded Box
177.8 x 127 x 63.5mm
50
32.3p
31.3p
30.3p
Single Wall Lidded Box (Printed Baby Pink)
7 x 5 x 2.5"
Single Wall Lidded Box (Printed Baby Pink)
17.8 x 12.7 x 6.4cm
Single Wall Lidded Box (Printed Baby Pink)
177.8 x 127 x 63.5mm
25
45.7p
43.7p
41.7p
Single Wall Lidded Box (Printed Black)
7 x 5 x 2.5"
Single Wall Lidded Box (Printed Black)
17.8 x 12.7 x 6.4cm
Single Wall Lidded Box (Printed Black)
177.8 x 127 x 63.5mm
25
Single Wall Lidded Box (Printed Blue)
7 x 5 x 2.5"
Single Wall Lidded Box (Printed Blue)
17.8 x 12.7 x 6.4cm
Single Wall Lidded Box (Printed Blue)
177.8 x 127 x 63.5mm
25
41.1p
39.1p
37.1p
Single Wall Lidded Box (Printed Hot Pink)
7 x 5 x 2.5"
Single Wall Lidded Box (Printed Hot Pink)
17.8 x 12.7 x 6.4cm
Single Wall Lidded Box (Printed Hot Pink)
177.8 x 127 x 63.5mm
25
45.7p
43.7p
41.7p
Single Wall Lidded Box (Printed Orange)
7 x 5 x 2.5"
Single Wall Lidded Box (Printed Orange)
17.8 x 12.7 x 6.4cm
Single Wall Lidded Box (Printed Orange)
177.8 x 127 x 63.5mm
25
45.7p
43.7p
41.7p
Single Wall Lidded Box (Printed Purple)
7 x 5 x 2.5"
Single Wall Lidded Box (Printed Purple)
17.8 x 12.7 x 6.4cm
Single Wall Lidded Box (Printed Purple)
177.8 x 127 x 63.5mm
25
45.7p
43.7p
41.7p
Single Wall Lidded Box (Printed Red)
7 x 5 x 2.5"
Single Wall Lidded Box (Printed Red)
17.8 x 12.7 x 6.4cm
Single Wall Lidded Box (Printed Red)
177.8 x 127 x 63.5mm
25
41.1p
39.1p
37.1p
Single Wall Lidded Box (Printed White)
7 x 5 x 2.5"
Single Wall Lidded Box (Printed White)
17.8 x 12.7 x 6.4cm
Single Wall Lidded Box (Printed White)
177.8 x 127 x 63.5mm
25
45.7p
45.7p
43.7p
Single Wall Cardboard Box
7 x 5 x 5"
Single Wall Cardboard Box
17.8 x 12.7 x 12.7cm
Single Wall Cardboard Box
177.8 x 127 x 127mm
50
23.6p
22.6p
21.6p
Single Wall Cardboard Box
8 x 6 x 2"
Single Wall Cardboard Box
20.3 x 15.2 x 5.1cm
Single Wall Cardboard Box
203.2 x 152.4 x 50.8mm
25
Double Wall Cardboard Box
8 x 6 x 4"
Double Wall Cardboard Box
20.3 x 15.2 x 10.2cm
Double Wall Cardboard Box
203.2 x 152.4 x 101.6mm
15
65.8p
62.5p
59.1p
Single Wall Cardboard Box
9 x 6 x 2"
Single Wall Cardboard Box
22.9 x 15.2 x 5.1cm
Single Wall Cardboard Box
228.6 x 152.4 x 50.8mm
25
33p
31p
29p
Double Wall Cardboard Box
9 x 6 x 3"
Double Wall Cardboard Box
22.9 x 15.2 x 7.6cm
Double Wall Cardboard Box
228.6 x 152.4 x 76.2mm
15
67.5p
64.2p
60.9p
Double Wall Cardboard Box
9 x 6 x 6"
Double Wall Cardboard Box
22.9 x 15.2 x 15.2cm
Double Wall Cardboard Box
228.6 x 152.4 x 152.4mm
15
Single Wall Cardboard Box
9 x 9 x 6"
Single Wall Cardboard Box
22.9 x 22.9 x 15.2cm
Single Wall Cardboard Box
228.6 x 228.6 x 152.4mm
25
47.9p
45.9p
43.9p
C5 Large Letter Postal Box
9 x 6.3 x 0.6"
C5 Large Letter Postal Box
22.9 x 15.9 x 1.6cm
C5 Large Letter Postal Box
229.1 x 159 x 16mm
50
24.4p
23.4p
22.4p
Single Wall Lidded Box
10 x 7 x 3"
Single Wall Lidded Box
25.4 x 17.8 x 7.6cm
Single Wall Lidded Box
254 x 177.8 x 76.2mm
50
Single Wall Lidded Box (Printed Blue)
10 x 7 x 3"
Single Wall Lidded Box (Printed Blue)
25.4 x 17.8 x 7.6cm
Single Wall Lidded Box (Printed Blue)
254 x 177.8 x 76.2mm
25
79.9p
77.9p
75.9p
Single Wall Lidded Box (Printed Baby Pink)
10 x 7 x 3"
Single Wall Lidded Box (Printed Baby Pink)
25.4 x 17.8 x 7.6cm
Single Wall Lidded Box (Printed Baby Pink)
254 x 177.8 x 76.2mm
25
79.9p
77.9p
75.9p
Single Wall Lidded Box (Printed Black)
10 x 7 x 3"
Single Wall Lidded Box (Printed Black)
25.4 x 17.8 x 7.6cm
Single Wall Lidded Box (Printed Black)
254 x 177.8 x 76.2mm
25
Single Wall Lidded Box (Printed Blue)
10 x 7 x 3"
Single Wall Lidded Box (Printed Blue)
25.4 x 17.8 x 7.6cm
Single Wall Lidded Box (Printed Blue)
254 x 177.8 x 76.2mm
25
71.9p
69.9p
67.9p
Single Wall Lidded Box (Printed Hot Pink)
10 x 7 x 3"
Single Wall Lidded Box (Printed Hot Pink)
25.4 x 17.8 x 7.6cm
Single Wall Lidded Box (Printed Hot Pink)
254 x 177.8 x 76.2mm
25
79.9p
77.9p
75.9p
Single Wall Lidded Box (Printed Orange)
10 x 7 x 3"
Single Wall Lidded Box (Printed Orange)
25.4 x 17.8 x 7.6cm
Single Wall Lidded Box (Printed Orange)
254 x 177.8 x 76.2mm
25
79.9p
77.9p
79.9p
Single Wall Lidded Box (Printed Purple)
10 x 7 x 3"
Single Wall Lidded Box (Printed Purple)
25.4 x 17.8 x 7.6cm
Single Wall Lidded Box (Printed Purple)
254 x 177.8 x 76.2mm
25
79.9p
77.9p
75.9p
Single Wall Lidded Box (Printed Red)
10 x 7 x 3"
Single Wall Lidded Box (Printed Red)
25.4 x 17.8 x 7.6cm
Single Wall Lidded Box (Printed Red)
254 x 177.8 x 76.2mm
25
Single Wall Lidded Box (Printed White)
10 x 7 x 3"
Single Wall Lidded Box (Printed White)
25.4 x 17.8 x 7.6cm
Single Wall Lidded Box (Printed White)
254 x 177.8 x 76.2mm
25
79.9p
77.9p
79.9p
Single Wall Cardboard Box
10 x 10 x 6"
Single Wall Cardboard Box
25.4 x 25.4 x 15.2cm
Single Wall Cardboard Box
254 x 254 x 152.4mm
25
57.6p
55.6p
53.6p
Double Wall Cardboard Box
11 x 11 x 11"
Double Wall Cardboard Box
27.9 x 27.9 x 27.9cm
Double Wall Cardboard Box
279.4 x 279.4 x 279.4mm
15
£1.33
£1.30
£1.28
Single Wall Postal Box With Tape
11.8 x 6.7 x 0.8"
Single Wall Postal Box With Tape
30 x 17 x 2.1cm
Single Wall Postal Box With Tape
299.7 x 170.2 x 20.8mm
50
38.2p
37.2p
36.2p
Single Wall Cardboard Box
12 x 9 x 4"
Single Wall Cardboard Box
30.5 x 22.9 x 10.2cm
Single Wall Cardboard Box
304.8 x 228.6 x 101.6mm
25
Single Wall Cardboard Box
12 x 9 x 6"
Single Wall Cardboard Box
30.5 x 22.9 x 15.2cm
Single Wall Cardboard Box
304.8 x 228.6 x 152.4mm
25
Single Wall Cardboard Box
12 x 9 x 9"
Single Wall Cardboard Box
30.5 x 22.9 x 22.9cm
Single Wall Cardboard Box
304.8 x 228.6 x 228.6mm
25
C4 Large Letter Postal Box
12.8 x 8.9 x 0.6"
C4 Large Letter Postal Box
32.6 x 22.7 x 1.6cm
C4 Large Letter Postal Box
325.9 x 227.1 x 16mm
50
Single Wall Postal Box
13.2 x 7.2 x 0.9"
Single Wall Postal Box
33.5 x 18.2 x 2.2cm
Single Wall Postal Box
335 x 181.9 x 21.8mm
50
34.1p
33.1p
32.1p
Whether you're a small business, a sole trader or started selling online it’s always handy to have a decent stock of postal packaging boxes close at hand.
From large to small, square to flat we supply a wide range of cardboard postal boxes to suit your business needs. Whether you need to post a small parcel or something larger the right box for you is one click away.
We make all our mailing boxes from high-quality corrugated cardboard, helping ensure your package arrives safely. If you’re searching for Royal Mail postal boxes, don’t worry as all our cardboard postal boxes are compatible with Royal Mail guidelines.
We sell both single and double wall cardboard postal boxes giving you a wide variety of options to choose from. All our Royal Mail parcel boxes come flat-packed as standard, helping you save on space.
Use our handy Box Finder if you're having difficulty locating the right boxes for posting.
Our range of Royal Mail postal boxes includes -
Looking to buy postal boxes wholesale? If you buy in bulk from us you can take advantage of our amazing discounts.
In a rush and looking for post office parcel boxes last minute? Don't worry, we offer next working day delivery as standard. Order before 13:45pm Monday-Thursday for same day despatch.
Moving house or need other cardboard boxes for shipping for your business? We also supply everything from removal boxes to storage and filing boxes.
