This Extension works great. Color is a little off but it’s not so noticeable

I needed to add length to my existing 11' x 13.5' shed as I was using it to store my 4-wheelers. Adding 5' provided enough room to put four 4-wheelers, 2 deep and 2 wide. And still have room to walk down the middle. Very happy about that! The real trick was getting the new parts to fit with the old since the old plastic panels had been exposed to the elements. The salesman at the store instructed me to pull out the new panels and leave them exposed to the heat and cold. While that helped a little bit, in the end, I simply forced the pieces to match up (without too much trouble) and it looks and functions fine. Being able to add length to an existing shed was an absolute lifesaver in my case. I am impressed with Lifetime's forethought!

[This review was collected as part of a promotion.] I bought the extension for the 11x21 and I put this whole thing together by myself, except for the doors, I needed a hand. The directions are a bit tricky but once you figure out that you need to put the bigger shed together in sections then its all worth it.

Bought this kit to add additional space to storage shed I ordered. Could not tell parts from original shipment & added additional Window & skylight.