(5 Pack) R7S Halogen 118mm 300W 120V Dimmable Tungsten J118 T3 J Type Halogen Light Bulbs Double Ended Floodlight Bulb for Work, Security, Landscape Lights, Floor Lamps 4000lm Warm White 2700K

Guide on Buying the Correct Light Bulbs: Base, Shape and Dimensions Base: R7s Double Ended Shape: T3 J Type J118 Diameter: 0.51 inches (13mm) Length: 4.65 inches（118mm）. Lighting Features Power:300 Watts Luminous Flux:4000 Lumens Voltage:110V/120V/130V AC Beam Angle: 360° Material: Glass Color Rendering Index (CRI): 100 for vivid and enhanced color Instant On. No Mercury. Lifetime: 2,000 hours (1.8 years with average of 3 hours use per day) CE and RoHS certified Pack of 5 Working with Halogen Dimmers These halogen light bulbs are dimmable using the dimmers designed for incandescent & halogen light bulbs. All incandescent and halogen light bulbs are dimmable using traditional dimmers, as these dimmers simply adjusts the voltage level for dimming. Dimming using LED only dimmers will result in incompatibility, as LED dimmers work very differently. Please check the compatibility of your dimmer switch or light fixture prior to purchase.