... Acrylic diffuser T5-2x14W,2x21W,2x28W,2x35W T8-2x18W T5,T8 commercial lighting fixture CE/ UL/CUL Housing ... UL lampholderBallast: electronic ballast for VS,Tridonic, Advance.Lamps: T8 or T5 illuminaireInstallation: Ceiling or wall mounted for ... -Y21x2T5,2x21W1330x130x70mm1320x300x190mm4HG213B-Y14x2T5,2x14W1030x130x70mm1070x300x190mm4 T5,T8 commercial lighting fixture