Measures 44 1/4"L (includes handle), x 14 1/2"W x 15 1/2"H. Length of the wagon is 21.75" without the handle.
The planter portion (shown in red) is wood. The rest is metal. Mine has been outside in the garden for about a year and still looks as nice (no rut or wood rot) as it did when I placed it there.
I planted in containers. It is made of wood so if you used it as a planter the wood (any wood planter) would rot in a few years. It is treated wood, but wood is wood. I’ve had mine for about 2 years and it still looks great.