This quality generic bulbs, is the ideal replacement for your Panasonic FDS18E35/4 18W Quad-Tube Fluorescent Lamp. These bulbs offer a brightness level of 3500K, providing a comforting, warm, yellowish-white light that creates a welcoming ambiance. Our 4-pack of bulbs has been designed to deliver exceptional performance and durability, making them suitable for both residential and commercial settings. Each bulb features a quad-tube design, which ensures even light distribution, reduced glare, and optimal illumination for your space. With a power consumption of 18W, these energy-efficient bulbs can help you save on electricity bills in the long run. The easy installation process involves replacing your old bulbs with our generic ones, granting you the benefits of enhanced lighting and cost savings. Our generic bulbs are specifically designed to be compatible with the Panasonic FDS18E35/4 18W Quad-Tube Fluorescent Lamp, ensuring a smooth replacement experience.