Purchased a 18 by 6 feet Pent shed plus base.  Materials : Not the best materials all thin and as a result not the most robust shed, not sure how long it will last. The base is fine basic 4x2 lengths cut to size. I’ll need to ply line the internals to use.  Size: Not tall enough, I had to increase the height by 8 inches to make it usable (added 8 X 2 to base)  the door is 5 feet 6 inches ... Ideal if you are a hobbit.  Summary : If you can, buy the wood yourself and construct something more robust for a similar or less cash.  It is a good ideal to have a modular system suggest power shed offer a more premium range for those that require a more robust and wind tight shed/workshop. (thicker everything and better height) Would not recommend or purchase again, cost to much extra to make useable and fit for purpose