This unique adapter panel can house 8 SC Simplex feed-through couplers for 4 Duplex or 8 Simplex fiber optic cables giving you a total of 8 fibers to connect. Each adapter panel has dust caps on each side to provide protection from airborne particles that can damage your connectors. Note: If using with SC Duplex cables, youll need to remove the housing first before inserting the connectors.