This collection includes square mailing tubes designed to ship and store rolled or folded items while preventing rolling and movement during transit. Constructed from rigid cardboard materials, square mailing tubes provide strong crush resistance and added stability compared to round tubes, making them easier to stack and handle. Commonly used for shipping posters, documents, artwork, and prints, the square mailing tubes in this collection offer dependable protection and improved handling for flat or rolled shipping applications.

Square Mailing Tubes

2 x 2 x 25 Square White Corrugated Mailing Tube 50/Bundle
2 x 2 x 25 Square White Corrugated Mailing Tube 50/Bundle

$112.15

2 x 2 x 37 Square White Corrugated Mailing Tube 50/Bundle
2 x 2 x 37 Square White Corrugated Mailing Tube 50/Bundle

$78.70

3 x 3 x 12 Square White Corrugated Mailing Tube 25/Bundle
3 x 3 x 12 Square White Corrugated Mailing Tube 25/Bundle

$25.50

3 x 3 x 18 Square White Corrugated Mailing Tube 25/Bundle
3 x 3 x 18 Square White Corrugated Mailing Tube 25/Bundle

$26.25

3 x 3 x 25 Square White Corrugated Mailing Tube 25/Bundle
3 x 3 x 25 Square White Corrugated Mailing Tube 25/Bundle

$32.90

3 x 3 x 30 Square White Corrugated Mailing Tube 25/Bundle
3 x 3 x 30 Square White Corrugated Mailing Tube 25/Bundle

$38.70

3 x 3 x 37 Square White Corrugated Mailing Tube 25/Bundle
3 x 3 x 37 Square White Corrugated Mailing Tube 25/Bundle

$43.95

3 x 3 x 43 Square White Corrugated Mailing Tube 25/Bundle
3 x 3 x 43 Square White Corrugated Mailing Tube 25/Bundle

$48.65

3 x 3 x 48 Square White Corrugated Mailing Tube 25/Bundle
3 x 3 x 48 Square White Corrugated Mailing Tube 25/Bundle

$44.60

4 x 4 x 25 Square White Corrugated Mailing Tube 50/Bundle
4 x 4 x 25 Square White Corrugated Mailing Tube 50/Bundle

$90.20

4 x 4 x 37 Square White Corrugated Mailing Tube 50/Bundle
4 x 4 x 37 Square White Corrugated Mailing Tube 50/Bundle

$102.35

5 x 5 x 12 Square White Corrugated Mailing Tube 25/Bundle
5 x 5 x 12 Square White Corrugated Mailing Tube 25/Bundle

$49.70

5 x 5 x 18 Square White Corrugated Mailing Tube 25/Bundle
5 x 5 x 18 Square White Corrugated Mailing Tube 25/Bundle

$38.75

5 x 5 x 25 Square White Corrugated Mailing Tube 25/Bundle
5 x 5 x 25 Square White Corrugated Mailing Tube 25/Bundle

$57.00

5 x 5 x 30 Square White Corrugated Mailing Tube 25/Bundle
5 x 5 x 30 Square White Corrugated Mailing Tube 25/Bundle

$64.25

5 x 5 x 37 Square White Corrugated Mailing Tube 25/Bundle
5 x 5 x 37 Square White Corrugated Mailing Tube 25/Bundle

$60.20

5 x 5 x 43 Square White Corrugated Mailing Tube 25/Bundle
5 x 5 x 43 Square White Corrugated Mailing Tube 25/Bundle

$72.60

5 x 5 x 48 Square White Corrugated Mailing Tube 25/Bundle
5 x 5 x 48 Square White Corrugated Mailing Tube 25/Bundle

$73.40

3 x 3 x 18 Square Kraft Corrugated Mailing Tube 25/Bundle
3 x 3 x 18 Square Kraft Corrugated Mailing Tube 25/Bundle

$28.30

3 x 3 x 25 Square Kraft Corrugated Mailing Tube 25/Bundle
3 x 3 x 25 Square Kraft Corrugated Mailing Tube 25/Bundle

$30.60

3 x 3 x 30 Square Kraft Corrugated Mailing Tube 25/Bundle
3 x 3 x 30 Square Kraft Corrugated Mailing Tube 25/Bundle

$28.55

3 x 3 x 37 Square Kraft Corrugated Mailing Tube 25/Bundle
3 x 3 x 37 Square Kraft Corrugated Mailing Tube 25/Bundle

$40.70

3 x 3 x 48 Square Kraft Corrugated Mailing Tube 25/Bundle
3 x 3 x 48 Square Kraft Corrugated Mailing Tube 25/Bundle

$52.80

5 x 5 x 18 Square Kraft Corrugated Mailing Tube 25/Bundle
5 x 5 x 18 Square Kraft Corrugated Mailing Tube 25/Bundle

$35.85

5 x 5 x 25 Square Kraft Corrugated Mailing Tube 25/Bundle
5 x 5 x 25 Square Kraft Corrugated Mailing Tube 25/Bundle

$71.20

5 x 5 x 30 Square Kraft Corrugated Mailing Tube 25/Bundle
5 x 5 x 30 Square Kraft Corrugated Mailing Tube 25/Bundle

$57.70

5 x 5 x 37 Square Kraft Corrugated Mailing Tube 25/Bundle
5 x 5 x 37 Square Kraft Corrugated Mailing Tube 25/Bundle

$57.15

5 x 5 x 48 Square Kraft Corrugated Mailing Tube 25/Bundle
5 x 5 x 48 Square Kraft Corrugated Mailing Tube 25/Bundle

$70.35

Quality Corrugated Square Mailers These 200 lb. test corrugated boxes have a square shape for easy inserting and removal.

  • Square mailing tubes ship flat and take up less space.
  • They will rest on flat surfaces without rolling off and are easily stackable.
  • Square mailers ship flat and take up less space.
  • They will rest on flat surfaces without rolling off and are easily stackable.


Tube selection here is organized around fit and structural protection. Use filters to narrow by diameter (commonly 1.5"–5"), length (from short tubes to 60"+), wall thickness/gauge (e.g., .060–.080), and end style (crimped end vs. end caps). These controls help prevent crushing and keep rolled items from shifting.

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