These are 4' 16.5 watt LED lamps. For direct replacement of a 4' T8 Fluorescent lamp controlled by a electronic ballast. No rewiring needed. Just insert into existing fixture.
Save big on your electric bill!! Some power companies offer rebates to install these.
Message me on Nextech. Have a large quantity. Will be cheaper the more you buy. Priced each. Case quantity is 10 to a case. Price lowered to $8.50 each