[Mikendebbie]

LilRed - we have the same gap under our half bath door...but we actually leave the door partially open during the hot months because with the door closed we can make ice in that bathroom. By leaving the door partially open (at night and when not in use) we spread some of that cold-air-love to the bedroom and the living room. Bottom line - as big as the door undercut is - our bathroom holds too much cold air.