Truth Round Top Sliding Door Handleset, Semi Active, Non Keyed with Thumb Latch - Black Color:Brushed Chrome as there are three possible

as there are three possible tab positions available for this type of roller assembly

Type: American Cylinder with Flat Tail pieceTail piece length: 1-7/8 inch

but comes non-keyed by default

and verify lock function before closing the door

Truth Round Top Sliding Door Handleset, Semi Active, Non Keyed with Thumb Latch - Black Color:Brushed Chrome as there are three possibleTruth Round Top Sliding Door Handleset, Semi Active, Non Keyed with Thumb Latch Black Plate Style: Arch Top Plate Width: 1 inch (25. 4mm) Plate Length: 10 inch ( 254mm) Screw Hole Spacing: 3 15 16 inch (100mm) Color Options: Black Lifetime Satin Nickel Faux Bronze White Other Functions: Active Keyed with a Thumbturn (centered key position) Active Keyed with a Thumbturn (off centered key position) Dummy No Key, No Thumbturn (handles levers do not move)