... tube,energy saving up to over 45%,long lifespan t8 t5 converter 1.Power 14w,21w,28w,35w,54w2.Power Factor PF ... (A) Power (W) PF (λ)THD %Flux LmTo Replace Tube Type T5/35w0.14-0.1531-34>0.99<10%2900-320058w ... .105-0.11524-26>0.99<10%2250-250040w T5/21w0.09-0.1020.2-21.7>0.99<10% ... 1650-185030w T5/14w0.056-0.06312.7-13.7>0.99<10 ...