Diane - I think you probably need to call housekeeping/engineering. Just call the phone number listed. then instead of asking for the front desk - ask for housekeeping/engineering. they can go measure this for you.
I don't carry a tape measure with me on vacation. So even if someone is there they might not be able to help you.
LOL, it needs to be 28". Our DD is in need of an air bed for her condo to use as an extra bed. We will be in a 2 bedroom for Dec. with 5 of us, but because DS and his SO will have the second bedroom, and DD can't stand ANY noise when she goes to bed, we are thinking of an air bed as her Christmas gift, but I want to make sure it will fit in the laundry room before I bring it along. We are celebrating our Christmas over New Years when we will all be in one place.
Though I wouldn't call this an official answer....
We happened to be in line ( at a F&W event) two weeks ago and another DVC member commented how they loved the size of the OKW rooms. They boasted that on one trip someone slept on an air bed in the laundry room.
Once again...not official but the likelihood is there...the OKW laundry room is bigger than mine at home. Christmas presents that are useful at WDW are the best kind
LOL, my traveling tape measure is my hand span. I know it's 8 1/2 inches. I'm thinkin it will fit fine, since the door has to be 3 ft wide to accommodate the washer going in or out. Since the airbed is only 28", I think it will be fine.