Instruction: Given a question and the related document, and generate the answer to the question based on the information provided in the document.

Input:
Question: Can you keep you window screen in with it?
Document: I looked specifically for dual switches for intake/exhaust and dual controls for speed and a fan that would sit securely in my window and this works perfectly! It's relatively quiet white noise in the evening and really draws in the air to keep the bedroom fresh and cool.
I wonder if Holmes has lowered its fans' capacity because people wanted lighter-weight and maybe quieter fans? If so, they have sacrificed the cool air that is really the goal of having a fan in the first place.If anyone knows of an oscillating, powerful window fan, please tell me the make and model. I'd rather spend more on a fan that will work well than keep buying these cheaper, weaker ones. Thanks!
I've tried the newer digital units and some smaller ones as well, but this particular window fan works perfectly and has all the features you need to keep cool.Pros:-Rotary thermostat dial is easy to adjust and works very well and won't annoy you by turning off and on every second like my newer Holmes digital unit does.- Easy to use. Control each set of blades (6 each) separately. Separate fan speed adjustments allow for every combination.
I will report back sometime down the road to review it further, mainly to report if it can keep the whole house cool(er). I do know the noise level is plenty low to sleep to.
Works as advertised.If you plan to use this fan in cold weather (as an exhaust fan) the thermostat may keep the fan from operating. This isn't a design flaw, since most people buy this type of product for use in hot weather; if the thermostat were calibrated for cold weather, it wouldn't work properly during those hot summer months.
This fan is manual and really simple, runs very quietly, and looks nice. It does not put out a lot of air flow &#8211; it will keep a smallish room (say 8 or 9 x 10) ventilated, but that's about it. I use it to keep air moving from cool windows during the day, and to bring in cool air at night. Pets can tolerate it b/c it runs quietly.
I've had this fan now for over two years and use it in the summer to keep my home office cool. It is fairly quiet and moves a lot of air either into or out of the room. The build quality is good using quality plastic and tasteful styling.At first, I found no way to easily clean the unit of dust at the end of the season. Disassembly seemed a bit complicated for the task of cleaning.
This dual window fan by Holmes (HAWF2041) is more quiet than I had expected from the reviews and the installation was easier too.
I think if you just need a quiet little fan you will be happy with this for your window. It doesn't sound like a 747 in the bedroom!
A minor gripe...I whole heartedly recommend this product.Holmes HAWF-2041 Twin Window Fan
Answer: Yes