Measurement: 18.11" x 3.54" x 3.54"This door mounted backboard can give you an authentic basketball experience. With a sturdy backboard and construction it is made to withstand many years of competitive play. Heavy-duty basketball rim is built to last and won't break off easily. It features extend brackets for quick and easy mounting to either side of the door. Our backboard can allow you to play basketball in your dorm bedroom sunroom basement and office. If this happens to be what you are looking for don't hesitate to add it to your cart. --18" x 12" polycarbonate shatterproof backboard for superior strength and durability --Heavy-duty 9" basketball rim with an all-weather nylon net --Extended bracket design for quick and easy mounting to either side of the door --5.5" Rubber Basketball included (deflated) also includes tool for easy hoop assembly --Can be taken to your dorm bedroom sunroom basement and office --Both adults and kids can have great fun