A herniated disk, sometimes (incorrectly) called a slipped disk, is a common cause of severe back pain and sciatica. A disk in the lumbar area becomes herniated when it ruptures or thins out, and degenerates to the point that the gel within the disk (the nucleus pulposus) pushes outward.
The ceiling fan's downrod must be long enough for the fan's blades to clear the ceiling. A fan with a 12-inch downrod works for a vaulted ceiling with a one-quarter-to one-third-inch pitch. An 18-inch downrod is sufficient for a pitch that is five-twelfths to one-half inch.
Hello Bharwad, Thank you for the question. A ceiling fan with a blade span of 60 inches and a CFM rating of 6999 or higher is sufficient for a 15âx25â (or 375 square feet) room. A 3 or 4 foot downrod will help as well, unless you have an exposed second floor, then a 18â or 2 foot downrod would be best.