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Royal Mail Postal Boxes

Royal Mail Postal Boxes

Browse our full range of cardboard postal boxes in the table below or pick one of our most popular mailing boxes from the selection in the header.

Box Size
(LxWxH)

Product Info

Boxes Per Pack

Price Per box (ex. VAT)

1-11 Packs

12-19 Packs

20+ Packs

1 Pallet

Number of
Boxes

Buy Now

4 x 4 x 4" 4 x 4 x 4"

10.2 x 10.2 x 10.2cm 10.2 x 10.2 x 10.2cm

101.6 x 101.6 x 101.6mm 101.6 x 101.6 x 101.6mm

50

16.8p

14.1p

13p

11.4p

Add a pallet
+ -

4 x 4 x 8" 4 x 4 x 8"

10.2 x 10.2 x 20.3cm 10.2 x 10.2 x 20.3cm

101.6 x 101.6 x 203.2mm 101.6 x 101.6 x 203.2mm

50

19.3p

17.9p

16.9p

 
+ -

4 x 4 x 13" 4 x 4 x 13"

10.2 x 10.2 x 33cm 10.2 x 10.2 x 33cm

101.6 x 101.6 x 330.2mm 101.6 x 101.6 x 330.2mm

15

57.2p

52.1p

49.9p

47.7p

Add a pallet
+ -

5 x 5 x 2.5" 5 x 5 x 2.5"

12.7 x 12.7 x 6.4cm 12.7 x 12.7 x 6.4cm

127 x 127 x 63.5mm 127 x 127 x 63.5mm

50

17.6p

14.9p

13.8p

12.1p

Add a pallet
+ -

5.5 x 4.4 x 1.3" 5.5 x 4.4 x 1.3"

14 x 11.2 x 3.3cm 14 x 11.2 x 3.3cm

139.7 x 111.8 x 33mm 139.7 x 111.8 x 33mm

50

17.7p

15p

13.9p

 
+ -

5.5 x 4.4 x 1.3" 5.5 x 4.4 x 1.3"

14 x 11.2 x 3.3cm 14 x 11.2 x 3.3cm

139.7 x 111.8 x 33mm 139.7 x 111.8 x 33mm

50

18.2p

15.5p

14.4p

 
+ -

5.5 x 8.8 x 1.3" 5.5 x 8.8 x 1.3"

14 x 22.4 x 3.3cm 14 x 22.4 x 3.3cm

139.7 x 223.5 x 33mm 139.7 x 223.5 x 33mm

50

22.6p

19.9p

18.8p

17.2p

Add a pallet
+ -

5.5 x 8.8 x 1.3" 5.5 x 8.8 x 1.3"

14 x 22.4 x 3.3cm 14 x 22.4 x 3.3cm

139.7 x 223.5 x 33mm 139.7 x 223.5 x 33mm

50

23.5p

20.8p

19.8p

 
+ -

6 x 4 x 3" 6 x 4 x 3"

15.2 x 10.2 x 7.6cm 15.2 x 10.2 x 7.6cm

152.4 x 101.6 x 76.2mm 152.4 x 101.6 x 76.2mm

50

21p

19.2p

18.4p

 
+ -

6 x 4 x 4" 6 x 4 x 4"

15.2 x 10.2 x 10.2cm 15.2 x 10.2 x 10.2cm

152.4 x 101.6 x 101.6mm 152.4 x 101.6 x 101.6mm

15

41.5p

37.9p

35.7p

33.5p

Add a pallet
+ -

6 x 4 x 4" 6 x 4 x 4"

15.2 x 10.2 x 10.2cm 15.2 x 10.2 x 10.2cm

152.4 x 101.6 x 101.6mm 152.4 x 101.6 x 101.6mm

50

17.5p

15.8p

15.1p

14.7p

Add a pallet
+ -

6 x 5 x 4" 6 x 5 x 4"

15.2 x 12.7 x 10.2cm 15.2 x 12.7 x 10.2cm

152.4 x 127 x 101.6mm 152.4 x 127 x 101.6mm

15

49.2p

45.6p

41.3p

38.2p

Add a pallet
+ -

6 x 5 x 4" 6 x 5 x 4"

15.2 x 12.7 x 10.2cm 15.2 x 12.7 x 10.2cm

152.4 x 127 x 101.6mm 152.4 x 127 x 101.6mm

50

17.7p

16p

15.3p

14.9p

Add a pallet
+ -

6 x 6 x 6" 6 x 6 x 6"

15.2 x 15.2 x 15.2cm 15.2 x 15.2 x 15.2cm

152.4 x 152.4 x 152.4mm 152.4 x 152.4 x 152.4mm

50

20.7p

20p

19.8p

19.4p

Add a pallet
+ -

7 x 5 x 2.5" 7 x 5 x 2.5"

17.8 x 12.7 x 6.4cm 17.8 x 12.7 x 6.4cm

177.8 x 127 x 63.5mm 177.8 x 127 x 63.5mm

15

49.3p

45.8p

42.1p

39.9p

Add a pallet
+ -

7 x 5 x 2.5" 7 x 5 x 2.5"

17.8 x 12.7 x 6.4cm 17.8 x 12.7 x 6.4cm

177.8 x 127 x 63.5mm 177.8 x 127 x 63.5mm

50

17.4p

14.7p

13.7p

+ -

7 x 5 x 5" 7 x 5 x 5"

17.8 x 12.7 x 12.7cm 17.8 x 12.7 x 12.7cm

177.8 x 127 x 127mm 177.8 x 127 x 127mm

50

18.5p

16.8p

16.1p

+ -

7 x 7 x 7" 7 x 7 x 7"

17.8 x 17.8 x 17.8cm 17.8 x 17.8 x 17.8cm

177.8 x 177.8 x 177.8mm 177.8 x 177.8 x 177.8mm

25

37.8p

36.7p

36p

35.2p

Add a pallet
+ -

7 x 7 x 10" 7 x 7 x 10"

17.8 x 17.8 x 25.4cm 17.8 x 17.8 x 25.4cm

177.8 x 177.8 x 254mm 177.8 x 177.8 x 254mm

25

40p

35.7p

34.8p

32.2p

Add a pallet
+ -

7.3 x 5.7 x 7.3" 7.3 x 5.7 x 7.3"

18.5 x 14.5 x 18.5cm 18.5 x 14.5 x 18.5cm

185.4 x 144.8 x 185.4mm 185.4 x 144.8 x 185.4mm

25

31.2p

30.8p

30.6p

 
+ -

8 x 6 x 2" 8 x 6 x 2"

20.3 x 15.2 x 5.1cm 20.3 x 15.2 x 5.1cm

203.2 x 152.4 x 50.8mm 203.2 x 152.4 x 50.8mm

25

29.1p

23.7p

21.5p

17.6p

Add a pallet
+ -

8 x 6 x 4" 8 x 6 x 4"

20.3 x 15.2 x 10.2cm 20.3 x 15.2 x 10.2cm

203.2 x 152.4 x 101.6mm 203.2 x 152.4 x 101.6mm

15

56.1p

51p

48.8p

44.8p

Add a pallet
+ -

8 x 8 x 6" 8 x 8 x 6"

20.3 x 20.3 x 15.2cm 20.3 x 20.3 x 15.2cm

203.2 x 203.2 x 152.4mm 203.2 x 203.2 x 152.4mm

25

35.7p

34.5p

33.6p

 
+ -

8 x 8 x 8" 8 x 8 x 8"

20.3 x 20.3 x 20.3cm 20.3 x 20.3 x 20.3cm

203.2 x 203.2 x 203.2mm 203.2 x 203.2 x 203.2mm

25

36.2p

34.8p

34p

31.4p

Add a pallet
+ -

9 x 6 x 2" 9 x 6 x 2"

22.9 x 15.2 x 5.1cm 22.9 x 15.2 x 5.1cm

228.6 x 152.4 x 50.8mm 228.6 x 152.4 x 50.8mm

25

29.1p

23.7p

21.6p

18.3p

Add a pallet
+ -

9 x 6 x 3" 9 x 6 x 3"

22.9 x 15.2 x 7.6cm 22.9 x 15.2 x 7.6cm

228.6 x 152.4 x 76.2mm 228.6 x 152.4 x 76.2mm

15

55.7p

50.7p

48.5p

42.7p

Add a pallet
+ -

9 x 6 x 6" 9 x 6 x 6"

22.9 x 15.2 x 15.2cm 22.9 x 15.2 x 15.2cm

228.6 x 152.4 x 152.4mm 228.6 x 152.4 x 152.4mm

15

56.6p

53.1p

50.8p

48.7p

Add a pallet
+ -

9 x 9 x 6" 9 x 9 x 6"

22.9 x 22.9 x 15.2cm 22.9 x 22.9 x 15.2cm

228.6 x 228.6 x 152.4mm 228.6 x 228.6 x 152.4mm

15

82.1p

79.9p

77.8p

73.4p

Add a pallet
+ -

9 x 9 x 6" 9 x 9 x 6"

22.9 x 22.9 x 15.2cm 22.9 x 22.9 x 15.2cm

228.6 x 228.6 x 152.4mm 228.6 x 228.6 x 152.4mm

25

37.5p

36.2p

34.9p

+ -

9 x 9 x 9" 9 x 9 x 9"

22.9 x 22.9 x 22.9cm 22.9 x 22.9 x 22.9cm

228.6 x 228.6 x 228.6mm 228.6 x 228.6 x 228.6mm

25

40.2p

39p

37.6p

36.8p

Add a pallet
+ -

9 x 6.3 x 0.6" 9 x 6.3 x 0.6"

22.9 x 15.9 x 1.6cm 22.9 x 15.9 x 1.6cm

229.1 x 159 x 16mm 229.1 x 159 x 16mm

50

19.2p

16.5p

15.4p

 
+ -

10 x 7 x 3" 10 x 7 x 3"

25.4 x 17.8 x 7.6cm 25.4 x 17.8 x 7.6cm

254 x 177.8 x 76.2mm 254 x 177.8 x 76.2mm

50

39.5p

38.9p

38.4p

38.4p

Add a pallet
+ -

10 x 10 x 6" 10 x 10 x 6"

25.4 x 25.4 x 15.2cm 25.4 x 25.4 x 15.2cm

254 x 254 x 152.4mm 254 x 254 x 152.4mm

25

40.7p

39.4p

38.1p

35.2p

Add a pallet
+ -

10 x 10 x 10" 10 x 10 x 10"

25.4 x 25.4 x 25.4cm 25.4 x 25.4 x 25.4cm

254 x 254 x 254mm 254 x 254 x 254mm

15

£1.09

£1.03

£1.03

99.2p

Add a pallet
+ -

10 x 10 x 10" 10 x 10 x 10"

25.4 x 25.4 x 25.4cm 25.4 x 25.4 x 25.4cm

254 x 254 x 254mm 254 x 254 x 254mm

25

64.3p

63p

61.7p

58.5p

Add a pallet
+ -

11 x 11 x 11" 11 x 11 x 11"

27.9 x 27.9 x 27.9cm 27.9 x 27.9 x 27.9cm

279.4 x 279.4 x 279.4mm 279.4 x 279.4 x 279.4mm

15

£1.22

£1.17

£1.15

£1.31

Add a pallet
+ -

12 x 9 x 4" 12 x 9 x 4"

30.5 x 22.9 x 10.2cm 30.5 x 22.9 x 10.2cm

304.8 x 228.6 x 101.6mm 304.8 x 228.6 x 101.6mm

25

38.3p

36.6p

35.7p

+ -

12 x 9 x 6" 12 x 9 x 6"

30.5 x 22.9 x 15.2cm 30.5 x 22.9 x 15.2cm

304.8 x 228.6 x 152.4mm 304.8 x 228.6 x 152.4mm

25

40.1p

38.4p

37.1p

+ -

12 x 9 x 9" 12 x 9 x 9"

30.5 x 22.9 x 22.9cm 30.5 x 22.9 x 22.9cm

304.8 x 228.6 x 228.6mm 304.8 x 228.6 x 228.6mm

25

45.6p

43.9p

42.6p

39.9p

Add a pallet
+ -

12.8 x 8.9 x 0.6" 12.8 x 8.9 x 0.6"

32.6 x 22.7 x 1.6cm 32.6 x 22.7 x 1.6cm

325.9 x 227.1 x 16mm 325.9 x 227.1 x 16mm

50

25.5p

24.5p

22.8p

22.1p

Add a pallet
+ -

Why Buy Cardboard Postal Boxes?

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 cardboard boxes, don’t worry as all our 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 postal boxes come flat-packed as standard, helping you save on space. 

Use our handy Box Finder if you're having difficulty locating the right package.

Discounts On Postal Boxes

Looking to buy postal boxes wholesale? If you buy in bulk from us you can take advantage of our amazing discounts.

Next Working Day Delivery

In a rush and looking for postal boxes last minute? Don't worry, we offer next working day delivery as standard. Order before 11:45 am Monday-Friday for same day despatch. 

Our Cardboard Boxes

Moving house or need other cardboard boxes for your business? We also supply everything from removal boxes to storage and filing boxes.