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.
Casablanca ceiling fans with UL-damp ratings are suited for humid and moist outdoor spaces with no direct exposure to water, rain, or snow. Damp-rated ceiling fans are great for covered areas like screened-in patios or porches and sunrooms, where rain or water will not reach the ceiling fan. Flush Mount Outdoor Ceiling Fans-These exterior fans are suited for outdoor living areas with a ceiling height less than the recommended eight feet. 2  Outdoor Ceiling Fans with Lights-These outdoor fans combine comfort and safety by providing the cooling breeze of a ceiling fan with the necessity of a light fixture.