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double longspan extension kits mild steel storage shelving with small parts bins

Marsoni M251S
Sale price$609.98
Pay 4 payments of $152.50 a month.Shop Pay
Get it in 3 business days with 1 day shipping. Friday, May 29
double longspan extension kits mild steel storage shelving with small parts binsDouble Longspan Extension Kits provide a robust and versatile storage solution for expanding your existing longspan shelving systems. Designed for use with Mailbox Products starter bays, these extension units offer additional capacity for small parts storage in workshops, warehouses, and industrial environments. Manufactured from high quality mild steel, the extension bays feature bolt free assembly for quick installation and full shelf adjustability.
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
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4.4 ★★★★★
Based on 1934 reviews
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Verified Purchase
HD Rider
Port Orchard, US
★★★★★ 5
Great product
Size: 4.5", Style: Open
Strong grip
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 18, 2026
A
Verified Purchase
Alexandria
San Leandro, US
★★★★★ 5
Work great
Item Package Quantity: 6, Color: Black
Relatively strong hooks. The metal I have them on is thin so the magnets arent as steady as I hoped but thats my fault not the hooks. Ample hook space and solidly built
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Reviewed in the United States on March 23, 2024
A
Verified Purchase
Amazon Customer
Cuba, US
★★★★★ 5
You need these!
Item Package Quantity: 4, Color: Black
These are not really “industrial strength” but they work great and are decent quality, especially for the price. I bought them to use on a sheet metal barn and they hold halters, rakes and other supplies with ease. Out of curiosity I did toss a dewalt drill in one and it held even though I ordered the medium size and the drill didn’t fit super well.
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Reviewed in the United States on August 6, 2025
K
Verified Purchase
K. Nguyen
Chelsea, US
★★★★★ 5
Very useful tools or helmets hanger.
These are quite useful and hold anything that’s less than 10lb. I think it can hold heavier items but I think it’s best to keep it light and the magnet strong enough to make it very convenient to affix it to any metal cabinet or poles.
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Reviewed in the United States on August 7, 2025
J
Verified Purchase
Julie Fleming
New York, US
★★★★★ 1
Magnet strength is weak AF
Item Package Quantity: 30, Color: Black
Magnet strength is absolutely terrible! I was hoping that they would be strong against my shipping container as the product suggests, but I put a item on it that barely weighs 10 lb and it started sliding down the wall. The magnets are not strong at all!
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Reviewed in the United States on May 6, 2026

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