The UL-listed Chief CMA110 8" (203mm) Ceiling Plate is designed for ease of installation with any height of drop ceiling. By using any length of standard NPT 1-1/2" pipe threaded both ends; you can extend the height capabilities to meet your needs. It can also be combined with any Chief CMS fixed or adjustable extension column to customize your installation. Also known as -Ceiling Plate-Chief Ceiling Plate - 500lb-Chief Manufacturing Ceiling Plate-Chief CMA110 8" (203mm) Ceiling Plate with 1.5" NPT Fitting-Chief Manufacturing Cma110 Cma-110 Flat Ceiling Plate