Case of 4 full spectrum light bulbs that create daylight balanced lighting, are energy star compliant, and have a long life of cir. 6,000 hours *) with 4250 Lumens output; low energy consumption, used in light therapy for treating S.A.D. (Seasonal Affective Disorder), for photo studio lights, or for starting plant growth. These are Compact Fluorescent Light (CFL) bulbs. Fits all medium-base E27/E26 sockets. Dimensions: L: 10.5″; W (Diameter): 3.9″; Length socket base to top of ballast: 4.5″; W (diameter) of socket: 1″. *) ALZO CFL bulb life is based on the bulb in an open air upright orientation. When ALZO bulbs are installed in fixtures that lack adequate ventilation, the life of the bulb will be reduced. If an ALZO CFL bulb is installed in an overhead recessed light fixture with the bulb glass below the base, the life of the bulb will be greatly reduced. ALZO warranty for all CFL bulbs is 30 days.
Product Features
- CFL bulb has natural daylight balanced color temperature of 5500K
- Ideal for treatment of S.A.D. – Winter Blues
- This is a large bulb that might not fit standard household lamps – see diagram above
- Long bulb life appr. 6,000 hrs. *)
- Energy Star compliant
Wow, these are huge! I knew that they were going to be big, but I never imagined that they were going to be this big. I bought them for studio lighting but there is no way they are going to fit in any kind of household light fixture. They are very very bright and do the job perfectly.
Huge in size, not in actual wattage Wow, these bulbs do look bigger in person. Only right for fixtures that are wide-open with plenty of space in all directions!I purchased these for use with a “Photo Basics 413 4-Socket Adapter” and a photography umbrella lamp fixture, and everything is working perfect. The diameter of these is large enough that they barely fit, given angle of the four sockets; their bases are all touching each other, but this doesn’t seem to cause any problems (the bases don’t get really hot on the outside).These are hands down the best CFLs I’ve ever owned. I am very impressed that these are 100% silent at all times. And the light output quality is very good. They do have a short warmup period, but it is barely noticeable in terms of brightness.According to my Kill-a-Watt (which is very accurate), these actually consume in the range of 60-73 Watts. I watched the power consumption starting cold and through the entire warmup until it completely stabilized (at a room temperature of 65 degrees Fahrenheit). They started at about 60W (each), gradually rose to 73W, then gradually fell back down to 68W where they remained (at least for several minutes…I didn’t leave them on for hours to come back and see where they were when fully hot). So I’m guessing that the 85W number is just a worst-case sandbagged figure, not the actual average power consumption that you should expect.I’m not sure how that compares to other brands of high-output CFLs. If there is another bulb which actually consumes 85W and is equally efficient, it would probably be even brighter than these. But anyone serious about light bulbs already knows that the lumen rating is the only one you should be looking at if you care about brightness. The Wattage rating is useful only to double-check that your lamp and circuit will be able to handle this much power (which very likely they can).
nothing is better for the price I’ve had these on set rigged up in a giant china ball, and the results are fantastic. the soft light (broken up by the china ball) is really pretty, and the color temperature is nearly perfect for mid-day sun. For the price, these cannot be beat. (these bulbs are ENORMOUS and will NOT fit into most normal household lamps – the screw is the same size but the bulb housing and coil are absolutely HUGE, so just be prepared for that)