Money Saving Upgraded with high LED chips technology, this 4W led bulbs provide the same lumens output of 40W incandescent bulb, but save up to 90% energy. Long lifespan is up to 25,000 hours, so reduce your replacement frequency. Wide Applications- Indoor Light Fixtures / Outdoor Enclosed Fixtures Wall Sconces/Enclosed Light Fixtures For Indoor Outdoor Use Wall sconce/Pendant Light for Bathroom/ Bedroom Pendant Lights/Chandeliers/Ceiling Light For Hallway/Foyer/Kitchen/Living Room FAQ: 1. Are these bulbs suitable for fully enclosed light fixtures such as those with glass globe shades? Yes, of course. This t6 led bulb is suitable for enclosed glass globe fixture for ceiling fan light bulbs, chandelier light bulbs and pendant bulbs,etc. Lighting fixture applied: chandelier fixture, ceiling light fixture, bathroom light fixtures, wall light fixtures, porch light fixtures, globe light fixture, exterior light fixtures, island light fixtures, vanity light fixture, dining room lighting fixtures hanging, foyer light fixtures; other indoor and outdoor light fixture,etc. 2.How can I do if one bulb broken or not working? Just email to us for the replacement bulb in the fastest and most convenient way. 3. Are these compatible with all Lutron dimmers? Our led bulb is compatible well with more than 90% dimmers in the United States without any humming or buzzing. Here is the recommended dimmers: Lutron: DVCL-153P-WH; DVWCL-153PH-WH; MACL-153M-WH; AYCL-153P-WH; TGCL-153PH-WH; SCL-153P-WH; T93B4; T9167; TGCL-153P; T90C5; T90C1; TX1C1; IPL06; SCL-153PH-WH; LWCL-150HWH. Leviton: 6674-P0W; 6672-1LW; IPL06-10Z; TSL06-1LW; DSL06-1LZ; 6674; DSL06-1TW; RDL06-TW.