Pemko SIM150-3 Simultaneous Telescoping Acting System For use with 3-panel systems going in a single direction or two 3-panel systems meeting in an opening. Each system is available with a locking kit or a surface bolt kit Accommodates up to 176 pounds per panel For Interior Doors Overhead Mount 2803 Aluminum track is required (please order separately) Downloads Pemko SIM150-3 Catalog (.) Pemko SIM150-3 Cut Sheet (.pdf) Pemko SIM150-3 Installation Instructions (.pdf) Close Interested in this product? Contact us to order Related products Pemko H800S-OHDoors up to 800lbs each Overhead Mount Pemko H300S-SWDoors up to 300lbs each Side Wall Mount Pemko H1100A-OHDoors up to 1100lbs each Overhead Mount