Summary: The Steel Flange with Post Insert for 2-inch OD Tubing (20-541/2) is a carbon steel post base from Lavi Industries and the largest in the post-insert line. A 12-inch threaded steel insert rises from a 4.5-inch flange, and the 2-inch tube slides over it to seat firmly and square. It is the Type B surface mount: the flange bolts down with four lag bolts and floor anchors, and a Flange Canopy 540/2 hides the plate. Mounting hardware and canopy are sold separately. It suits indoor rails in lobbies, on mezzanines, and along stairs, using .050-inch wall tubing. The carbon steel base needs paint or powder coat before an outdoor install, and a spec sheet is available. Ships from US inventory.
Key specs: SKU=20-541/2; Material=CARBON STEEL (NO material/finish field; 20- prefix; consistent with 20-541/1H; may require additional finishing for outdoor); Tubing OD=2"; Mechanism=Flange with Post Insert (tube SLIDES INTO precision-machined flange insert at scale); OD-Step Premium=+33.1% vs 20-541/1H 1.5" (MOST PRONOUNCED OD scaling observed across all PF SKUs)
Steel Flange with Post Insert for 2-inch OD Tubing
For the larger post, the same engineered fit applies at the floor line: the 2" OD tube seats into a machined insert rather than a loose fit, locking post to flange. The carbon steel base serves indoor rails on .050" thin-wall tubing — add paint or powder coat before outdoor or high-moisture use.