Optimum One Rectangles - GlossAvailable In These Finishes Gloss Matte Metallics Gemstone Standard The Optimum One Rectangle planter is designed in three sizes and fits standard grow pots from 6" or 10". Choose to add the optional internal pedestal to conveniently raise the grow pots. Optimum One Planters are lightweight with outstanding durability. These containers are painted with low VOC SCRATCHGUARD finishes. Like our other low fossil fuel products, Optimum One planters are