LEFT HAND is for a door that has the handle on the LEFT side when viewed from the OUTSIDE. THESE KITS ARE HANDED - Please determine which hand you need using the product pictures. Match the curve of your handle to the pictures included with each variation. Genuine FASCO Hardware - not an inferior reproduction. Our kit includes all the hardware and fasteners necessary for a direct replacement of your broken Vanguard FASCO sliding door handle. Solves broken thumb turn issue common to this lock style. These sliding glass door handles can break if the strike is not adjusted correctly and there is undue force on the lock mechanism. Includes: inside outside trim. mortise lock, strike and all necessary mounting hardware to replace your vinyl patio door lock. Vanguard sliding door locks are found on many brands of patio doors and the FASCO lock is a direct replacement. Easy to install in minutes with basic hand tools and you will save thousands over a complete door replacement! LEFT HAND is for a door that has the handle on the LEFT side when viewed from the OUTSIDE. THESE KITS ARE HANDED - Please determine which hand you need using the product pictures. Match the curve of your handle to the pictures included with each variation. Genuine FASCO Hardware - not an inferior reproduction. Our kit includes all the hardware and fasteners necessary for a direct replacement of your broken Vanguard FASCO sliding door handle. Solves broken thumb turn issue common to this lock style. These sliding glass door handles can break if the strike is not adjusted correctly and there is undue force on the lock mechanism. Includes: inside outside trim. mortise lock, strike and all necessary mounting hardware to replace your vinyl patio door lock. Vanguard sliding door locks are found on many brands of patio doors and the FASCO lock is a direct replacement. Easy to install in minutes with basic hand tools and you will save thousands over a complete door replacement!