Airfloat Systems



Fast Facts

StrongBox is the original, made in the USA, reusable art shipper. Loved by artists and art-lovers alike, StrongBox provides unsurpassed protection for your valued artwork.

  • Double wall carton construction
  • Three layers of shock-absorbing foam
  • Tough puncture guard liners
  • Integrated handle on many models
  • Approved by all major air and ground carriers
  • Quick and simple to use - no mess, no tools
  • First time using a StrongBox? Check out our step-by-step guide and video.

StrongBox | Starting at $33.00

The choice of museums and fine art galleries worldwide.


StrongBox is the original, made in the USA, reusable art shipper. Loved by artists and art-lovers alike, StrongBox provides unsurpassed protection for your valued artwork.

  • Double wall carton construction
  • Three layers of shock-absorbing foam
  • Tough puncture guard liners
  • Integrated handle on many models
  • Approved by all major air and ground carriers
  • Quick and simple to use - no mess, no tools
  • First time using a StrongBox? Check out our step-by-step guide and video.
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Lined or Unlined?

Made of tough ABS plastic, our puncture guard liner provides the puncture resistance of 3/8" plywood, but without the weight of a wooden shipping crate. Lined StrongBoxes are our best selling product.



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View all sizes, item numbers, and specifications in a handy comparison chart.

Shop by Item Number

Click here to see complete specifications for all StrongBoxes.

Comparison Chart


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Enter frame size (in inches) to show only StrongBox™ sizes appropriate for your artwork.

For the best sizing results, we recommend entering all 3 dimensions (width x length x thickness).

To Shop by Artwork Size

Enter the size of your framed artwork to show only appropriately sized StrongBoxes.

  • Width: shortest side (e.g., on a 24" x 36" x 2" frame, width is 24")
  • Length: longest side (e.g 36" in the above example)
  • Thickness: the depth of the artwork/frame (eg 2" in the above example)

Size up for even more protection and versatility

If you follow our Maximum Frame Size recommendation, your artwork will be extremely well protected from jarring and bouncing while in transit.
However, you may opt for a slightly larger StrongBox than our guide recommends if you are expecting particularly rough or long transit experience – or if you want the flexibility to reuse your StrongBox to transport a larger piece.

StrongBox™ Comparison Chart

Have questions? Please Call +1 (800) 445-2580! or email us: sales@airfloatsystems.com

Item NumberPuncture Guard LinerMax Frame SizeInterior DimensionsBoardHandlePrice
1722U14 x 19 x 217 x 22.5 x 3350LB DW$33.00
1722L14 x 19 x 217 x 22.5 x 3350LB DW$39.00
2227U19 x 24 x 222 x 27.375 x 3350LB DW$41.00
2227L19 x 24 x 222 x 27.375 x 3350LB DW$48.00
2530U22 x 27 x 325 x 30 x 4350LB DW$52.00
2329U20 x 26 x 423 x 29 x 5500LB DW$59.00
3136U28 x 33 x 231 x 36 x 3350LB DW$64.00
2530L22 x 27 x 325 x 30 x 4350LB DW$69.50
3140U28 x 37 x 331 x 40 x 4350LB DW$78.00
2329L20 x 26 x 423 x 29 x 5500LB DW$79.50
2836U25 x 33 x 428 x 36 x 5500LB DW$80.00
2530SU22 x 27 x 625 x 30 x 8500LB DW$86.00
3136L28 x 33 x 231 x 36 x 3350LB DW$86.00
3542U32 x 39 x 335 x 42 x 4350LB DW$89.00
3140L28 x 37 x 331 x 40 x 4350LB DW$93.00
2836L25 x 33 x 428 x 36 x 5500LB DW$96.00
2530SL22 x 27 x 625 x 30 x 8500LB DW$103.00
3449U31 x 46 x 334 x 49 x 5350LB DW$106.00
3542L32 x 39 x 335 x 42 x 4350LB DW$111.00
3442U31 x 39 x 3.534 x 42 x 4.5500LB DW$113.00
4343U40 x 40 x 343 x 43 x 4500LB DW$113.00
3847U35 x 44 x 338 x 47 x 4350LB DW$114.00
3442L31 x 39 x 3.534 x 42 x 4.5500LB DW$133.00
3449L31 x 46 x 334 x 49 x 5350LB DW$136.00
3762U34 x 59 x 437 x 62 x 5500LB DW$138.00
3847L35 x 44 x 338 x 47 x 4350LB DW$142.00
4343L40 x 40 x 343 x 43 x 4500LB DW$144.00
5050U47 x 47 x 350 x 50 x 4500LB DW$146.00
3542SU32 x 39 x 635 x 42 x 8500LB DW$149.00
4353U40 x 50 x 343 x 53 x 4500LB DW$150.00
4058U35 x 55 x 4.538 x 58 x 5.5500LB DW$166.00
4045U37 x 42 x 640 x 45 x 7.75500LB DW$171.00
3542SL32 x 39 x 635 x 42 x 8500LB DW$173.00
4353L40 x 50 x 343 x 53 x 4500LB DW$174.00
3762L34 x 59 x 437 x 62 x 5500LB DW$176.00
5166U48 x 63 x 351 x 66 x 4500LB DW$180.00 Please call for availability
4558U42 x 55 x 4.545 x 58 x 5.5500LB DW$186.00
5050L47 x 47 x 350 x 50 x 4500LB DW$189.00
4058L35 x 55 x 4.538 x 58 x 5.5500LB DW$202.00
4045L37 x 42 x 640 x 45 x 7.75500LB DW$212.00
5166L48 x 63 x 351 x 66 x 4500LB DW$229.50 Please call for availability
4558L42 x 55 x 4.545 x 58 x 5.5500LB DW$232.00
6262U59 x 59 x 462 x 62 x 5500LB DW$244.00 Please call for availability
6262L59 x 59 x 462 x 62 x 5500LB DW$299.50 Please call for availability

Custom Sizes Also Available

Looking for a custom size? We can tailor-make a custom size for a perfect fit.

Request Custom

Max Frame SizeBoardPrice
14 x 19 x 2
350LB DW$33.00
14 x 19 x 2
350LB DW$39.00
19 x 24 x 2
350LB DW$41.00
19 x 24 x 2
350LB DW$48.00
22 x 27 x 3
350LB DW$52.00
20 x 26 x 4
500LB DW$59.00
28 x 33 x 2
350LB DW$64.00
22 x 27 x 3
350LB DW$69.50
28 x 37 x 3
350LB DW$78.00
20 x 26 x 4
500LB DW$79.50
25 x 33 x 4
500LB DW$80.00
22 x 27 x 6
500LB DW$86.00
28 x 33 x 2
350LB DW$86.00
32 x 39 x 3
350LB DW$89.00
28 x 37 x 3
350LB DW$93.00
25 x 33 x 4
500LB DW$96.00
22 x 27 x 6
500LB DW$103.00
31 x 46 x 3
350LB DW$106.00
32 x 39 x 3
350LB DW$111.00
31 x 39 x 3.5
500LB DW$113.00
40 x 40 x 3
500LB DW$113.00
35 x 44 x 3
350LB DW$114.00
31 x 39 x 3.5
500LB DW$133.00
31 x 46 x 3
350LB DW$136.00
34 x 59 x 4
500LB DW$138.00
35 x 44 x 3
350LB DW$142.00
40 x 40 x 3
500LB DW$144.00
47 x 47 x 3
500LB DW$146.00
32 x 39 x 6
500LB DW$149.00
40 x 50 x 3
500LB DW$150.00
35 x 55 x 4.5
500LB DW$166.00
37 x 42 x 6
500LB DW$171.00
32 x 39 x 6
500LB DW$173.00
40 x 50 x 3
500LB DW$174.00
34 x 59 x 4
500LB DW$176.00
48 x 63 x 3
500LB DW$180.00 Please call for availability!
42 x 55 x 4.5
500LB DW$186.00
47 x 47 x 3
500LB DW$189.00
35 x 55 x 4.5
500LB DW$202.00
37 x 42 x 6
500LB DW$212.00
48 x 63 x 3
500LB DW$229.50 Please call for availability!
42 x 55 x 4.5
500LB DW$232.00
59 x 59 x 4
500LB DW$244.00 Please call for availability!
59 x 59 x 4
500LB DW$299.50 Please call for availability!

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500 lb box cert2

Premium Quality Carton

Mullen-Rated Box Maker's Certificate seal is your guarantee of quality and strength.

Double-wall corrugated board construction approved by FedEx and UPS for high durability and resistance to damage.

Strongbox product feature 3 layers foam

Three Layers of Shock-Absorbing Foam

Top and bottom layers of convoluted (egg shell) foam suspend your artwork as it rests on the peaks. This suspension effect diverts the shock away from the pressure points of the frame.

A middle layer of customizable perforated “perf-pack” foam molds to the edges of your artwork for a perfect fit.

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Puncture guard liner

Puncture Guard Liners

Lined Strongboxes further protect your artwork with two layers of tough ABS plastic that provide puncture resistance equivalent to 3/8" plywood but without the weight.

Strongbox carry handle product feature

Integrated Handle

100 lb carrying handle integrated into many models for convenient carrying.

StrongBox Sizes

Airfloat manufactures more than 20 stock StrongBox sizes. We also manufacture custom sized strongboxes by request.

Request Custom

FAQs

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Measuring a Painting
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Dee Gevik Tunseth painting in Strong Box
Strong Box in a gallery
Airfloat Strong Box Pack Gallery 3
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Lori Putnam Painting in Strong Box

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