The Prime-Line C 1139 Keyed Patio Sliding Door Outside Pull Lock is a durable and reliable door lock designed for patio doors. Made of black diecast material, this lock is manufactured by Prime Line Products and comes with fixings supplied for easy installation. Suitable for patio doors, this outside pull lock provides security and peace of mind for your home. With a manufacturer part number of C1139, this lock is a dependable choice for your home improvement needs.