201429. The 74366 Combination Chamber M-56/M-63 from dormakaba (formerly known as Kaba) is designed to suit the dormakaba Simplex 1000 & L1000 series of mechanical digital locks. This product replaces the 201429 Combination Passage Set Sleeve.. Replace product 201429. Suits Kaba Simplex 1000, L1000 & 3000 series of mechanical digital locks. Combination chamber.