Specifications include, but are not limited to: 1. Locksets and Latchsets: To ANSI A156.2, Series 4000, Grade 1, UL listed, extra heavy-duty cylindrical type. 1. Backset 2 3/4 inches (70 mm). 2. 7 Pin Interchangeable Core: X15W keyway supplied where requested. 3. Locksets to have anti-rotational studs that are through-bolted. 4. Slabbed outside hub to engage through-bolted outside rose assembly for increased stability. 5. Inside and outside threaded chassis hubs and rose liners for secure installation. 6. Keyed lever with no exposed keeper hole. 7. Each lever to have independent spring mechanism to consistently return levers to horizontal position. 8. Inside and outside hubs with hardened steel reinforcing inserts. 9. Stainless steel latchbolt.