A-A-3159, COMMERCIAL ITEM DESCRIPTION (CID): TREAD, STAIR, FLEXIBLE AND SEMI-RIGID TYPE, RUBBER AND VINYL (09-JUN-1998) [SUPERSEDING ZZ-T-001237] [NO S/S DOCUMENT]

A-A-3159, COMMERCIAL ITEM DESCRIPTION (CID): TREAD, STAIR, FLEXIBLE AND SEMI-RIGID TYPE, RUBBER AND VINYL (09-JUN-1998) [SUPERSEDING ZZ-T-001237] [NO S/S DOCUMENT]., This CID covers the requirements for flexible and semi-rigid rubber or vinyl stair treads.