Rectangular Planter Box

I attempted this project because I thought it was a good way to start building boxes. Anyway I thought it was a little difficult in squaring the project. But after a couple of variations this is what it looks like in the attached pics.

My wife loved them that much that I built 2 square planters as well.

I used the following wood dimesions  using a wood called "Weathershield" it was a very inexspensive wood sold at my local DIY store.

2×2x36 (bottom frame)
4×2 top