Strathwood Galvanized Iron Square Planter (Set of 3) for $15.01. Here is a screenshot for your reference. Shipping is free on orders over $25. If needed, use this Filler Tool to pad the order for free shipping. The antique-gray square pots are made of 100% galvanized iron and come in 10.1″, 8.2″, and 6.5″ sizes.