InstallerParts 11"-14.5" TV Ceiling Mount Extension Pipe Coupling &ndash; 1.5&rdquo; Female NPT Pipe &ndash; LED LCD Plasma Flat Screen TV &ndash; Great for Panasonic, Samsung, LG, Vizio, Sony, Dynex, Insignia, and More COLUMN EXTENSION: Connectors may be used to extend drop lengths by connecting two or more columns. STANDARD NPT PIPE: The female NPT extension column is compatible with all mounts and ceiling mount adapters that uses the standard 1.5 inch NPT interface. STURDY & DURABLE: NPT pipe is made with PVC for strength and resistance to reactions with acids, gasoline, alcohol, and hydrocarbons. EASY INSTALLMENT: Standard hardware required to fasten the extension column connector to the extension pipe column and comprehensive product installation manual included. DESIGN: Made with solid toughened steel and coated in durable scratch resistant finish.