Emergency Door Stop, Bi-Fold Door, Max. Weight (Lb.) 150 lb, Zinc Alloy, Gray, Satin Chrome Finish, Shaft Length 4-1/2 in, Height (In.) 2 in, Width (In.) 1 in, Inside Dia. 1/2 in, Outside Dia. 1/8 in, Door Mounting, Mounting Hole Size (In.) 11/64 in, Number of Wheels 0, Zinc, Hardware Included, Requires Door, For Use With Double Acting Doors