I bought 3 lamps as a substitute equivalent fluorescent lamps, since one of the undercounter kitchen lamps was broken. The color temperature of the new lamp is 4000K. The defective fluorescent lamp had a value of 4200K and was to get neither the hardware store yet on Amazon. The difference is minimal, rather strikingly by a slightly better brightness of the new lamp. The price / performance ratio is super. I had been warned at the hardware store to purchase due to possible transport damage lamps over the Internet. I have not looked back. Goods was super packed.