Ceiling light dustproof, blastproof,outdoor lighting Feature: 1. No flicker 2. Energy saving ballast 3. Super quiet Ceiling light 1. ABS/PC/PS High srengthened polymer transparent cover2. The head of the cover is round.3. Built-in powerful magnetic conductor ballast4. water-proof, dust proof, blast-proof5. T8 linear fluorescent tube6. Watt: 1x18w