GR10q 4 Pin 28W CFL Light Bulb, 4000K Natural White, 2000LM, Non-Dimmable 2D Square Compact Fluorescent Lamp, Energy Saving Bathroom Bulbs Ceiling for Home Office Corridor,20x20cm, 1 Pack

💡 28W GR10Q 4-Pin Light Bulbs: This 28W CFL Compact Fluorescent bulb with large size of 20x20cm installed in GR10q 4-pin fittings. Large 2D design offers wide coverage Just double-check your socket(it's for 4-pin, not 2-pin, and requires a 28W fixture, not 16W), and you're good to go. 🔆 4000K Natural White: Emits a balanced 4000K neutral white glow that delivers crisp, even illumination without harsh, washed-out tones. Flicker-free with a CRI>80Ra for true-to-life colour rendering, it cuts glare and boosts visibility — ideal for kitchens, bathrooms, hallways, stairwells, utility rooms and all high-traffic functional spaces. 【Non-Dimmable】 Designed for steady, consistent light, this 4 pin bathroom light bulb is non-dimmable and only works with HF electronic ballasts. Please note it is not compatible with Dimmer Switches, Magnetic Ballasts or LED systems. For the longest lifespan, avoid frequent on/off cycling and extreme temperature. ✅ 28W Energy-Saving Light Bulbs: Boasting 2000 lumens of bright, consistent light, this GR10q 2d 28W 4 pin light bulb matches the output of a 120W–150W incandescent bulb while using just a fraction of the power. It's a long-lasting, cost-effective upgrade for outdated 2D tubes and high-wattage bulbs. 📦 This gr10q 4 pin 28w is glass-made and packed with upgraded packaging to reduce transit damage. Contact us immediately for a free replacement if items arrive broken. We stand behind every purchase with reliable, customer-first support.