Flush bolt Fix 146 Application Used for inward- and outward-opening two-light windows without mullion. Function Keeps the passive sash closed when the other sash is opened. Material Housing and locking bolt of white acetal plastic. Security flush bolt 1220Used for inward- and outward-opening double doors. Flush bolt ASSA 8312Used for inward- and outward-opening two-light windows wi… Flush bolt ASSA 9312Used for inward- and outward-opening two-light windows wi… Do you want to create a safe lock environment? ASSA OEM has created "The lock guide by ASSA OEM", and it's made to give you knowledge and tips about approved lock sets. We really encouring poeple to read our tips and guidelines here: The lock guide Want to download our product catalogues? If you prefer to download our product catalogue - you can download it here! We also provide instructions, declarations and other documents in our download documents section.Check it out!