The Truth Hardware (AmesburyTruth) 16 Series EntryGard Left-Hand Sash Lock (16.27) features a 5/8" (15.8 mm) reach-out for optimal pull-in with a revolving cam locking mechanism. Designed to prevent water and air leakage, this sash lock is ideal for casement windows. The Truth 16.27 EntryGard Sash Lock offers up to 200 lbs of negative air pressure and resistance against forced entry, ensuring enhanced security and performance.