Fashionable large handle. Also operates upper and lower bolts (interlinked upper and lower bolts). Multi-layer glass. Lock hole for interlinked upper and lower locks. Key box with additional lower block and drainage functions. Comes with lock hole for interlinked upper and lower locks. Wind deflector (improved sealing and soundproofing performance). Anti-theft block Lower waterstop block. Sealing block Screen window with push lock. Fashionable and streamlined handle.