XO, OX, XOX, XOO, OOX????
Buying slider windows can be demystifying. What do the X’s and O’s stand for. Can they make it more confusing!!
X = Operating Window
O = Fixed Window
Are you sure this is right? Shouldn’t ‘O’ stand for Operator? No it is actually the opposite! O is not operator but fixed. I don’t know how many times I’ve had this conversation even with people, even those who are in the industry. I agree it’s confusing; not sure what the origin of using X’s and O’s is, unfortunately it is here to stay. Rather than try to rationalize or try to change the industry its better just to understand it. Unless you want to buy windows or patio doors that are all backwards.
Viewed from Exterior
Most of the time slider windows are going to be opened from the inside of the house thus most most people think of operation from the inside of the house. The reality is that the industry standard is to use the exterior of the house. Assuming that it is viewed from the inside is generally a very bad assumption. You may want to verify that it is in-fact from the exterior.
Operation vs Sliding Direction
X marks the side of the window that operates, NOT the direction that it slides! This is very important. A slider left (XO) means the operator is on the left side and slides to the right.
Left to Right
The X’s and O’s are read left to right just looking your looking at the window from the outside of your house.
XO = Operator on Left, Fixed on Right
OOX = Fixed on Left, Fixed in the Middle and Operator on Right.
There are many possibilities using X’s and O’s depending on the window system being used. Not all window systems can accommodate a OOX configuration as it requires a special type of mullion.
Not understanding which direction the window slides can be a big issue, especially once the window is installed. If you are not sure make sure you write on the contract which direction the operator slides from and which side of the house you are viewing the slider from. E.g. “Viewed from interior operator slides to the right. ” You don’t need to put it in their terms as long as there is no ambiguity. If you write “Operator slides to right” they may not know you mean from the inside of the house. It is always better to be safe than sorry. Once the window is installed the sales associate will always claim that they explained everything to you properly. The cost of changing an XO to an OX once installed is going to cost is very high as it is like doing the same job twice.
XO Slider Window
XOX Slider Window