Satco's 18-watt, 30 inch linear fluorescent lamp brings an alluring light to a variety of work spaces. The lamp shape is T8, with a Medium Bi Pin base. The fluorescent lamp has a white finish, and is rated for 7500 hours of use.|Satco's S26516 18-watt, 30 inch linear fluorescent lamp brings an alluring light to a variety of work spaces. The lamp shape is T8, with a Medium Bi Pin base. The fluorescent lamp has a white finish, and is rated for 7500 hours of use.