4000 Kelvin 4 FT LED - Type B Direct-Wire
4000K Cool White LED T8 lamps are probably the most common color temp as they can be an ideal choice for several applications. Many lumen packages are available from high-efficacy 10.5W or 12.5W LED T8 lamps that replace 32W to standard 15W LED lamps. Keystone's 18.5W 4000K LED T8 delivers nearly 2600 lumens and for the highest output 15W option you will want GE's 15W 3500K 2100 lumen lamp (sold by case of 20 only). Keystone has 120V Dimmable (Forward Phase Control) LED T8 lamps as well as 0-10V Dimmable LED T8s. Compatible dimmers sold separately. Most options require single-end re-wiring to a non-shunted although Keystone's DX2 LED T8 series allows for single-end or double-end wiring.