The product description says 2500 lumens which seems too good to be true. 2500 lm / 40 W would be 62.5 lm/W, which corresponds to a light output of more than 9%, which I think is unrealistic for an incandescent lamp. I bought a pair anyway as they were cheap and they aren't particularly bright. The box says 288 lumens at 120V, which is just over 1% light output. I'll probably return them and buy LED bulbs instead.
Antique 40W T14 Incandescent Light Bulb With Medium Screw Base (E26) By Bulbrite
35 Review
12 Pack MR16 LED Bulbs 50W Halogen Equivalent - 5W GU5.3 4000K Neutral White Non-Dimmable 45 Degree Beam Angle For Landscape, Recessed & Track Lighting
39 Review
Intpro 60W LED Corn Light Bulb Lamp, 6000LM E26/E27 6000K 85V~265V Super Bright Light For Indoor Large Area, Garage Barn Workshop Warehouse Factory Porch Backyard High Bay Street Outdoor
29 Review
π G9 Ceramic Base LED Light Bulbs 4W Warm White 3000K - G9 Base Bulbs, Equivalent to 40W Halogen, 450LM, G9 Warm White Bulbs for Home Lighting, Pack of 5, Non-dimmable
29 Review
E12 T22 Low Voltage Edison Bulb LED 12V-24V Vintage Tubular Night Light Bulb 1W 100 Lumen LED Candelabra Light Bulb 2700K 10W Equivalent Small Filament Bulb For RV,Out Door String Lights, Pack Of 25
15 Review
20 Pack 5CCT 4FT LED T8 Ballast Bypass Type B Light Tube, UL/FCC Certified - 18W, 2300Lm, 3000K-6500K Selectable
21 Review
Set Of 4 Geeni Prisma Wi-Fi Multicolor LED Light Bulbs, 1050 Lumens, 2700K, Dimmable, No Hub Required, Compatible With Alexa And Google Assistant, 75-Watt Equivalent
41 Review
Luminescent lamp Camelion 11066 ultraviolet, E27, 26 W
12 Review