This wide beam tube features an innovative coated glass design that diffuses heat and light more evenly than plastic tubes. In turn these LED tubes produce a light emitting area of 325 degrees for better overall light distribution. Built-in universal voltage driver. Bypasses existing fluorescent ballast. Suitable for use in totally enclosed fixtures. Medium Bi-Pin G13 base. Beam angle of 180 degrees. Diameter of 1.14 inches. Long life of 50,000 hours. Suitable for damp locations.