Working with a width of 33-ish inches, I'd opt for a single. A double would give you two 15" ers at best. Probably more than double the cost of the single & wouldn't give you any more light whatsoever.

i would absolutely do a single casement window. it's a cleaner look and as you mentioned, it will let more light in. Good luck!

I have the same question but have a 3'x4' opening in bedroom. Would a double casement window work or would a single casement be better?

dcurls...:How is that any different than the OP's question? There's only a couple of inches difference between your windows.

@tatts, yes difference from OP is inches, but wondering if a few inches and location of casement, makes a difference. My house style is also different (Spanish) and tall casement windows are architecturally consistent. All my facts may result in same answer.

dcurksbennett, i would absolutely 100% do a single casement. the look of a double only works if it is wide enough and tall enough. another thing to conisder is the make of the window. A Marvin, Jeld Wen or other higher end window maker's window will look a lot better than a cheap vinyl window from a lesser company. Good luck with your project!

'for me' i'd rather have the tall narrow double. that way you can open either side, depending on which way the wind is blowing, to catch a breeze.

unless you really never plan on opening it. but anyway you need to decide which way it should open to catch the most likely direction of breeze.

Thanks for this feedback. We will be renovating our home to commit to a Spanish style. Adding a clay tile roof, painting stucco, wood garage door. We have existing vinyl windows with prairie style gridlines (not sure why I opted for these but that 13 years ago). Ideally all windows in the house will be replaced with paintable windows, brown/bronze casement. If budget does not permit replacing all windows, we may just replace the certain windows (most visible) including the ones on the front elevation. Least costly idea is to keep the vinyl windows and replace the glass removing the gridlines. Our budget could potentially fit replacing all windows, but something else would likely drop out being done now. We could replace glass now, and replace windows down the road. The 2 windows in this picture are those I originally was asking about whether 2 double casements would work. It sounds like each window should be single casement window. Any suggestions on replace all new ($$$), replace some new ($$), replace panes only ($)?

For those of you who provided feedback regarding my original post, thank you! It made our decision much easier. As much as we love the look of the double casement window, each window (glass portion) would only be 11" wide which means there would be a lot of casing and very little glass to let in the light. We decided on one large casement window given our size restrictions :)