Can you post a picture of it? Check the thickness of the side plates and where the three point pins are.
My six foot Cammond With CAT1 pins, weighs 647 pounds.
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Ah, the Mother of Invention. Love the sun-shade.
Charlie
Can you confirm the brand name and spelling, Agrotec?
Can't find any info searching "agrotec box scrape".
If it is well built, you can add weight to it.