Custodial Locks, Sash Locks with Key or specialized locking keys etc. There are a number of different type and styles for Casement and Awning Windows, Double and single hung windows etc. - Custodial Locks, Sash Locks, Key Operated Custodial Locks, Casement and Awning Window Sash Locks- we have them all! Spring-loaded and strong, tamper resistant, Rotating the key locks or unlocks the sash. A slot in the housing requires a special key to operate the lock. Vent Locks, No key included (sold separately) White Bronze Finish Use with 900-218 Key, Sweep & Sash Locks.