For Modular Series Flat Panel Display and Projector Mounts The Peerless-AV Modular Mounts Line features a full range of products that can fulfill multiple requirements from a limited number of SKUs. With the universality of the components, configure your own perfect custom flat-panel display or projector mounting solution for any application. The Modular Mount Line was developed with the professional AV installer in mind. Designed around a 2″ (50mm) diameter pole, the line is ideal for new projects as well as for upgrading existing installations. The MOD-APC Pole Coupler connects two 2″ (50mm) poles together.