Schlage B571 626 B580 Deadbolt Occupancy IND X Thumbturn 626, Satin Chrome Locksets shall adjust to fit door thickness from 1 3/8" to 2". All lever designs shall be solid (no inserts) and meet the federal ada and state disability requirements. Lever trim shall have individual heavy-duty springs for lever return and to prevent lever sag. Trim shall be through-bolted with screws coated with thread sealant to provide strength and resistance to loosening. Locksets shall be ul listed 3-hour, a label. All locks shall meet the new ansi/bhma a156.2, series 4000, grade 2 test requirements for key-in-lever locksets.