The QTXEN line represents the ultimate in bath fan solutions for today's homes. Whether by sight or by sound you'll barely notice the QTXEN line. Except of course when you need just the right amount of ventilation at the touch of a switch. Has a housing dimension of 11 1-4" long 10 3-8" wide 7 5-8" high and grille dimension of 12 7-8" wide and 13 5-8" long.