I bought this for the air vent in my 2011 Fleetwood Tioga 24DSL RV. The shape and proportions of the item appear to be the same as the one I replaced. While they look very similar, they are not the same. The size and spacing of the two fastening screws do not match. The mounting bolt spacing on this Ventline BV0114-04 is 2-3/8 inch. The clearance on the one I'm replacing is 2-15/16 inches. I was able to use the one-bolt Ventline as a temporary replacement. to mount it (the distance between a mounting screw and the handle fitted well enough to not have to change the handle hole through the fixed screen). The ventline has a lever that's about as long as the one I'm replacing, but it only opens about three quarters.