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This is a 22W circular T9 fluorescent lamp with a 4-pin G10q base, made for fixtures that take an 8-inch circline tube. It gives cool white light at 4100K with 1050 initial lumens and a color rendering index of 62, so colors look a bit flat compared with modern LEDs. The rated average life is 12,000 hours. It suits owners of older round ceiling fixtures, magnifier lamps and shop lights who need a direct replacement rather than an upgrade. Against LED circline retrofits it is cheaper to buy but uses more power and cannot match LED life or color quality.
In stockSold by Dynamic LampsReturns: Sold by a Walmart Marketplace seller; returns go to the seller under the seller's returns policy.
Availability unknown
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Lowest price we've seen: $15.79 on Nov 13 at Amazon. Tracked across 1 store since Nov 13.
Ratings are solid at 4.3 out of 5 from 33 buyers. Most seem satisfied that it fits and lights their fixtures as expected; the main grumbles are about color quality and the hassle of fluorescent bulbs in general.
This Philips Alto Plus fluorescent bulb is an 8-inch T9 circline lamp, a circular tube, with a 4-pin G10q base.
It has a color temperature of 4100K and produces cool white light. Its color rendering index is 62. The average life is 12,000 hours.
