3" FNPT Black Malleable Iron Floor Flange: Amazon.com: Industrial & Scientific
Value Collection 3" Pipe, 7-1/2" OD, Stainless Steel, Slip On Pipe Flange 6" Across Bolt Hole Centers, 3/4" Bolt Hole, 150 psi, Grades 316 & 316L - Walmart.com
3/4" Floor Flange, Home TZH Malleable iron Pipe Fittings for Industrial vintage style, Flanges with Threaded Hole for DIY Project/Furniture/Shelving Decoration (10 Pack) - Amazon.com