Handle Set - Sliding Patio Door, Internal Lock COLOR:White What is the difference between

What is the difference between the Standard Mortise box and the UL listed box

Emtek 9841432D Heavy Duty Ball Bearing Hinges (Pair)

Depress Lever

Plated steel chain and diecast lock and keeper secure door while allowing viewing and ventilation

Exceeds BHMA – grade 3 standards for wood

Handle Set - Sliding Patio Door, Internal Lock COLOR:White What is the difference betweenPart Number: 14040 Handle Set for Sliding Patio Door Patio Sliding glass door handleset with 3 15 16 inch Screw Hole Centers FITS Wells Metal Aluminum Sliding 1 inch thick Doors, WOOD HANDLE For 1 to 1 & 1 4 inch thick door rails. Outside Handle ''S'' Curve will work with 15033 key cylinder Color: Black Wood or White Wood Finish: Painted Wood Screw Hole Center: 3 15 16 inch Latch Style: Hook Style Material: Mixed Materials Type: Handle Internal Lock