Speedheat RugBuddy 170w under Rug Space Heater (4' 10" x 2' 10") Reflective underside improves efficiency Plug-in comfort and warmth at your feet over tile, wood, vinyl and carpeted floors Invisible: Fits snugly under 3' x 5' area rug. Warm small spaces - under your desk or at the foot of your easy chair. Safe: No risk of fire or shock.