1) suit for T8 tubes2) electronic ballast3) cover material:PS4) certificates: CCC, TUV, GS, SASO, CE,etc5) some more statistics:Model Specs L*W*H(mm) MX228-Y10 1*10W 378*111*40 MX228-Y15 1*15W 484*111*40 MX228-Y20 1*20W 635*111*40 MX228-Y30 1*30W 941*111*40 MX228-Y40 1*40W 1246*111*40 MX228-Y20*2 2*20W 635*152*46 MX228-Y30*2 2*30W 941*152*46 MX228-Y40*2 2*40W 1246*152*46 6) more details and informations to contact us futher
