The Cover for the FlyCage6 Fly Trap (4B1NN) is the genuine part designed to ensure the reliable operation of your fly trap. It securely seals the trap and helps maintain the efficient performance of the trapping system. Made from durable material, the cover is easy to fit and is ideal as a replacement for a lost or damaged original. For full functionality, use the cover together with the original FlyCage Fly Attractant and the matching Grid Insert.