The dimensions shown on the BB site are - once again - incorrect. On Amazon, it's listed as 37.2 x 7.1 x 60.4 inches (confirmed by several buyers in the QA section).
Unit Dimensions: (in inches) Length: 40.00" Left To Right Measurement Width: 9.13" Front To Back Measurement Height: 71.25" Bottom To Top Measurement Weight: 61.50 lbs
It's about 4.5 feet. It's really shallow and the shelves do not fit DVDs without wasting lots of space. I've already had my dvds fall off the shelf twice because they sit over the ledge.