The ASEC AS12 Rollerbolt Nightlatch delivers reliable security for shared and flat entrances with its dual-operation design. Operated by key from outside and turn handle from inside, it eliminates the risk of accidental lockouts while accommodating push/pull door movements. The rollerbolt mechanism extends from 9mm to 20mm when engaged, providing dependable bolt throw for residential and communal applications. Engineered for straightforward installation and everyday convenience, this nightlatch is the practical choice for properties requiring accessible yet secure access control.