The LINDY Modular AV Face Plate System means that you can create your own custom face plates by using a combination of Snap-in Blocks & Keystone modules. Install this ST Duplex Multimode face plate along side other Keystone & Snap-in modules. These modules provide a full range of solutions for AV, networking, voice & audio installations. The wide selection of modules & face plates can be custom configured giving you greater control & flexibility. Additional required products... Please Note: The LINDY Modular AV Face Plate System must be used in conjunction with LINDY Face Plates. Single Gang Face Plateor Double Gang Face Plate are also available.