Drain Smart container-drainer discs are an excellent choice for uniform drainage along with a quick and easy installation.. The 9 inch discs diameter discs are perfect for medium to large pots or containers. For smaller containers or pots, try our 6" diameter Drain Smart discs on a convenient 3-pack http://www.amazon.com/Drain-Smart-6-Disc-5-pack/dp/B00BLV9UFS?ie=UTF8&keywords=drain%20smart&qid=1462152558&ref_=sr_1_1&sr=8-1