Sunlite 40531 FML27/65K/2PK Quad Tube Plug-in Compact Fluorescent Lamp, FML 4-Pin, 27 Watts, 1500 Lumens, 6500K Daylight, 4-Pin (GX10q4) Base, 120 Volts, 2 Pack

Arrived on time, works as described, good quality product

These are very bright.

This works fine in my non-Verilux lamp.. Note that these dont fit a Verilux lamp which has a slightly different (but important) base. Check the 2 side tracks at the bottom-for verilux they're longer but with a gap at very bottom.

I was pleased with the price, and even more pleased with how well it worked as a replacement bulb for my lamp. I would definitely buy this again if I needed it. Hopefully, the product is good enough that I will not need it again.

Used in daylight lamp. Great bright light.

Perfect fit works great

I have ordered this bulb before, actually 7 years ago and it works just as well. Nice to know they didn’t change their product and it lasts this long.

They're the wrong base for my Verilux desk lamps. How do I say it? One base is an oval with tabs on either side that help to guide and seat the bulb into the socket. The bulbs I received are what I can only describe as a split oval in shape with tabs on either side that sit flush with the bottom edge of the base of the bulb. Getting "warm white" instead of that "full spectrum" whiter light bulbs is a bit challenging. Bulbs didn't fit. So, I carefully, craftily, and patiently filed down the plastic tabs with some sandpaper and a mill file.... and they fit and worked like a charm. Fit! Worked! Warm fluorescent bulbs for my old Verilux lamps, in spite of the tedious detail of the different base, though identical, regarding the overall shape and the "4-pin" pins.

EXCELENTE COMPRA, duran una eternidad usandolas diariamente SI lo volvería a compra nuevamente

Works great and price is very good. Mother in-law uses as a sort of grow light for her flowers as there is very little light in her room where she lives

Just what I needed when the supplier of my lamp stopped stocking replacement bulbs. Great

Son de muy buena calidad. Lo malo que ya no los utilicé porque mi lámpara se dañó del balasto y los tuve que regresar

This is a second replacement bulb for my Sun Light Lamp by Lights of American. First bulb purchased from a local store, rated 2700K, very yellow and felt dark. It's a hard to find bulb in local lighting stores. Now I found it at Amazon and the bulb is at my door within two days. Wow, 6700K, what a different! It is bright, white light mimic sun lights. I am very happy with this purchase, price and quality. I highly recommend it as a FML27 4-pin replacement bulb.