Two Inch Series 8 ft. x 8 ft. x 16.5 in. Versailles Sunburst Classic Sienna Composite Raised Garden Bed Kit

JJ I have two of these but don't think they would work well on an extreme slope as the soil would naturally gravitate to the front/top. If you go to the manufacturer's website there is a phone number there. Think if I were you I would call and ask. I can't remember how many bags of soil etc that this required but it was quite a few. In fact I am putting an extra 10 bags in the back one presently to take care of the compression/composting from last year. Wish I could help you more as this could be an expensive project if they couldn't handle the slope.

This item is make in China

If you'll pardon my using a different unit of measure, I'll reference a standard size wheelbarrow that I completely loaded up with dirt. 1) It took me 8 trips with my wheelbarrow from my dirt pile to fill up the raised bed. 2) After the dirt had settled over the weekend, it then took another half-wheelbarrow of dirt. The height of the three levels stacked on top of each other along with the pointed corner of the top level make it difficult to roll your wheelbarrow up beside it in order to simply dump the wheelbarrow dirt into the center of the raised bed. 3) If you wish to save some effort after shoveling the dirt into the wheelbarrow (only to then have to shovel it into the center of the raised bed), dump the wheelbarrow dirt into one of the lower sections to fill a lower section up first. 4) Using a spare piece of scrap lumber, use it as a makeshift ramp to roll the subsequent wheelbarrows full of dirt up onto the filled lower section. 5) From that elevated position on top of the filled lower section and also now facing the side of the center section, you should then be able to easily dump the wheelbarrow dirt into the center section.

Yes, you could put this on a concrete patio if you wanted.

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This item comes with 16 curved timbers and 8 stacking joint 2-packs