SC to FC Simplex Coupling Adapters with a multimode and singlemode configuration: 788-4543 This SC to FC simplex coupler has a black PBT housing, a ceramic alignment sleeve and inbuilt retention clips to aid panel mounting. The panel cut-out for this SC to FC simplex adapter is 13.10 x 9.60m with a maximum panel thickness of 1.7mm. 820-8369 This SC to FC simplex coupler has a Nickel Plated Zinc/Brass housing, a Phosphor Bronze alignment sleeve and inbuilt retention clips to aid panel mounting. The panel cut-out for this SC to FC simplex adapter is 9.25 mm diameter with a maximum panel thickness of 1.7mm.