I'm throwing around the idea of building a 4 tub rack rack using Lowes 26" x 20" mixing tubs.

I was at Lowes today pricing everything to try to come with a rough total cost and the only 2x2 I saw were these 2x2 furring stripes:

I'm not sure what the difference is between a furring strip and a normal 2x2 but would they be appropriate to use for building a small 4 tub rat rack? They seemed pretty straight and without many knots.