National Automatic Sprinkler Industry Pension Fund (NASI Pension) is a multi-employer defined benefit union pension fund based in Landover, Maryland. Established in 1957, the plan provides pension benefits to the employees of the automatic sprinkler industry. The plan is a collectively bargained, joint trustees, labor-management trust fund. The assets of the pension fund are managed by the board of trustees made up of an equal number of individuals appointed by the union and the employers.