Square Patio Umbrella Base in Stainless Steel 9530-01060111 - The Home Depot
SmileMart 4 lbs Black Square Polyethylene Patio Umbrella Base with Water Resistant - Walmart.com
SUMBEL 10' X 10' Square Patio Umbrella | Racktodoor
Amazon.com : Best Choice Products 38.5lb Steel Umbrella Base, Square Weighted Patio Stand for Outdoor, Backyard, Market Umbrellas, Sun Shade w/Tightening Knob and Anchor Holes - Black : Patio, Lawn & Garden
Amazon.com: Best Choice Products 4-Piece 155lb Capacity Heavy-Duty Cantilever Offset Patio Umbrella Stand Square Base Plate Set w/Easy-Fill Spouts for Water or Sand - Black : Everything Else
Square Brown Umbrella Base, 42lb
Costway 36lbs Square Umbrella Base Stand Weighted Patio Market Umbrellas Black : Target