The Zoo Med Mini Combo Deep Dome Lamp Fixture includes two fixtures in one! The dual fixture allows for one Nightlight Heat Lamp and one Basking Spot Lamp or 100 W Powersun UV Lamp. This fixture includes a polished aluminum dome to increase light and UV output by up to 30%. Use lamps up to 100 watts (each socket) with the dual ceramic sockets and enjoy the extra long deep dome that helps prevent your lamp from sticking out.