I was working on the new flooring in the '85 Keystone when I thought a vent fan would be nice. A quick measurement from the interior looked like the opening is 12"x12" with it measuring 15x15 across then frame. Seems like most fans are 14"x14". Anyone know for sure the size of the older vents. Also assuming there are fans that will fit without enlarging the opening, can they powered from a light?
Dan
Dan
