Locks for Sliding Windows Whitco CYL4 Mini Push LockSuitable for sliding, casement, awning or double hung windows. Whitco CYL4 Mini Window BoltSuitable for sliding, casement, awning or double hung windows. Whitco CYL4 Multi BoltSuitable for sliding, casement, awning or double hung windows. Whitco CYL4 Push LockSuitable for sliding windows. Whitco CYL4 Window BoltSuitable for sliding, casement, awning or double hung windows. Whitco Sliding Window Lock (Diecast)Suitable for sliding windows.