In an OXO glass door configuration, how many stationary stiles, including locking stiles, are there?

In an OXO glass door configuration, the design typically involves a combination of moving and stationary elements. The term "OXO" implies that there are two sliding doors that move in opposite directions, creating a central opening.

In this configuration, there are often stationary side panels, referred to as stiles, on either side of the opening. This means that each sliding door has its own stile that remains fixed. Additionally, locking stiles are included as part of the stationary components.

Given the OXO configuration consists of two side panels and the two locking stiles where the doors meet, the total adds up to four stationary stiles: two on the sides and two at the center (one for each sliding door). This is why the correct answer is four.

Understanding the function of stiles in this context is crucial for tasks related to glazing, as it relates to both structural integrity and security of the door installation.