CMA-101 CMA-101 5" ceiling plate is a cost effective solution for simple installations. Easy to install and made so versatile it can hold equipment using all 4 holes or 2 opposing holes. The 4" x 4" mounting pattern is designed to allow use of 3/8" mounting bolts. Includes set screw to secure 1 1/2" NPT to ceiling plate. Weight Capacity: 500 lbs.