Fibre F2F LowProfile PanelMount Coupler LC APC Single Duplex – TUK LTD KOLADXBpm, This LC APC keystone coupler/adaptor can be used for easy snap-in mounting in a keystone patch panel, faceplate or surface-mount box. The compact design allows fitting 24 or even 48 into a 1U keystone patch panel. LC APC enables significantly reduced noise by comparison with standard LC connections. TUK Ltd KOLADXBpm Fibre F2F LowProfile PanelMount Coupler LC APC Single Duplex