![Swap Your Conventional Light Bulbs for LEDs at No Charge! | Sustainability | Washington University in St. Louis Swap Your Conventional Light Bulbs for LEDs at No Charge! | Sustainability | Washington University in St. Louis](https://sustainability.wustl.edu/files/2020/02/Bulbs.jpg)
Swap Your Conventional Light Bulbs for LEDs at No Charge! | Sustainability | Washington University in St. Louis
![BH&G LED Light Bulb, 4.5-Watt (40W Equiv.) A19 with E26 Medium Base Dimmable Filament Soft White, 2PK - Walmart.com BH&G LED Light Bulb, 4.5-Watt (40W Equiv.) A19 with E26 Medium Base Dimmable Filament Soft White, 2PK - Walmart.com](https://i5.walmartimages.com/seo/BH-G-LED-Light-Bulb-4-5-Watt-40W-Equiv-A19-with-E26-Medium-Base-Dimmable-Filament-Soft-White-2PK_ad98b1d4-1076-4e98-9e24-b6f7c8632471.7b2c4c85a82ee7b64f37e41fbb05aa77.jpeg?odnHeight=768&odnWidth=768&odnBg=FFFFFF)
BH&G LED Light Bulb, 4.5-Watt (40W Equiv.) A19 with E26 Medium Base Dimmable Filament Soft White, 2PK - Walmart.com
![Historical increase in efficiency of lighting technologies. Efficiency... | Download Scientific Diagram Historical increase in efficiency of lighting technologies. Efficiency... | Download Scientific Diagram](https://www.researchgate.net/publication/353307818/figure/fig1/AS:1046523857076226@1626522139477/Historical-increase-in-efficiency-of-lighting-technologies-Efficiency-here-describes-the.png)
Historical increase in efficiency of lighting technologies. Efficiency... | Download Scientific Diagram
![Great Value LED Light Bulb, 9W (60W Equivalent) A19 General Purpose Lamp E26 Medium Base, Non-dimmable, Soft White, 4-Pack - Walmart.com Great Value LED Light Bulb, 9W (60W Equivalent) A19 General Purpose Lamp E26 Medium Base, Non-dimmable, Soft White, 4-Pack - Walmart.com](https://i5.walmartimages.com/seo/Great-Value-LED-Light-Bulb-9W-60W-Equivalent-A19-General-Purpose-Lamp-E26-Medium-Base-Non-dimmable-Soft-White-4-Pack_cbfc8927-008e-40d9-9c1f-cb9949168607.a2aca9d49a0e23c8e961e7716390053c.jpeg?odnHeight=768&odnWidth=768&odnBg=FFFFFF)