This PACK of 1500mm (5ft) 18W T5 Glass LED Tube with Double-Sided Power (10 Units) is perfect for swapping out conventional fluorescent tubes in your home or business. Its light source features SMD LEDs that provide enough power to replace fluorescent tubes of up to 1500mm. This efficiency provides us with savings of up to 50%. The opening angle is 300º and this tube is ready to  be wired at both ends and comes in a translucent cover. As it's connected direct to the mains, we can remove the residual consumption of ballasts and starters, allow for longer durability and less maintenance. When switching this 18W T5 Glass LED Tube on, it will provide instant light and will not flicker. *Not recommended for installation in closed luminaires. *T8 LED Tube Installation Guide