Amazon.com: Structural Fitting, 1-1/2" Square Base Flange, 33F-8, Aluminum Magnesium, Please note. ID of fitting is 1.925, to take nominal 1-1/2" steel pipe which all have an OD of 1.9". : Industrial
Amazon.com: Stainless Steel 316 Grade Oblong Base Flange for 1-5/8" (42 mm) OD Tube Post : Industrial & Scientific
Stainless Steel Round Long Neck Floor Flange Base, Round Tube Post Anchor, Top Hand Rail Wall Mount for Cable Railing Deck, 316 Marine Grade (Intermediate Posts) - Power And Hand Tools - Amazon.com
Anchor Flange
Flanged Pipe – U.S. Pipe
Flange square up to 8” pipe – Off The Hook Design And Fab
Amazon.com: Structural Pipe Fitting, 1-1/2" Heavy Duty Square Base Flange, 34F-8, Aluminum Magnesium, Please note. ID of fitting is 1.925, to take nominal 1-1/2" steel pipe which all have an OD of
Amazon.com: Stainless Steel 316 Grade Oblong Base Flange for 2" (50.1 mm) OD Tube Post : Industrial & Scientific
Square Wall Flange
Narrow Flange For 1" Square Tubing - Trade Diversified
Stainless Steel Flange for Square Tube - Flange Cover
8907: Flange | Wagner Companies
5" Heavy Duty Floor / Ceiling Flange - Polished Stainless Steel - 2" OD