Welcome to The Bio Dude!
The PowerSun UV is a self-ballasted mercury vapor lamp which emits UVA, UVB and heat all in one lamp! Fits into a standard ceramic socket. (No ballast needed.)
Please note the Bio Dude is still waiting on the correct picture from Zoo Med, so the 100 watt is pictured but you will receive the 160 watt.
The 160 Watt projects UVB up to several feet from the lamps surface and is ideal for large terrariums or bird aviaries. Features include quality nickel plated threads to prevent corrosion.