... 9 gauge, 10 gauge and 11 gauge Venturis lengths come in 3" to 6". Custom cages also available MaterialsFinishesCarbon SteelCarbon SteelGalvanized ... load) • If the cage loads from the top, what kind of top does it have? (turned down flange top, ring top, split collar ... flange top) • If the cage loads from the bottom, what kind of bottom does it have? (split collar, split ring top) • Material type ( ...