# Sylvania 20673 Double Tube CFL Bulb 26W 3500K Neutral White G24q-3 Base | 20,000 Hour Life, Energy Efficient **Brand:** LEDVANCE **SKU:** uwv4161 **ASIN:** B00P807QIG **Canonical URL:** https://crowcrowcrow.com/p/sylvania-20673-cf26dd-835-eco-26-watt-3500k-4-pin-double-tube-fluorescent-lamp/uwv4161 **Category:** home-kitchen **Subcategory:** Categories **Availability:** in_stock **Price (INR, all-inclusive):** ₹2,064 **Discount:** 33% **Customer rating:** 4.88/5 from 8 ratings ## Description Sylvania 20673 26W CFL bulbs offer 3500K neutral white light with 20,000 hours of life. Dimmable and energy-efficient, they provide consistent brightness for task and accent lighting. Imported to India, duties included. ## Highlights - 20,000 Hour Lifespan — Lasts up to 20 times longer than incandescent bulbs, significantly reducing replacement frequency and maintenance costs for offices and retail spaces. - Energy Savings Up To 75% — Consumes only 26W, using a quarter of the energy of comparable incandescent bulbs. Dimmable with electronic ballasts for further efficiency when full brightness isn't needed. - Accurate Color Rendering (82 CRI) — Rare earth phosphors deliver natural-looking colors in a 3500K neutral white tone, ideal for retail displays, task lighting, and accent lighting where true color perception is crucial. - Consistent Brightness — Maintains 86% mean lumen output throughout its lifespan, ensuring reliable and steady illumination for demanding applications like exit signs and hotel lobbies. ## Key features - EFFICIENT LIGHT YOU CAN COUNT ON: This 26W 4-pin compact fluorescent bulb is dimmable and designed for electronic ballast fixtures. Plug-in G24q-3 base. A direct upgrade for recessed, task, and showcase lighting. - CRISP, HIGH-QUALITY LIGHT WITH 82 CRI: Rare earth phosphors deliver accurate, natural-looking color in a neutral white 3500K tone. High CRI means colors and surfaces look true - great for retail, task, and accent lighting where light quality matters. - 20,000 HOUR LIFE - HALF THE MAINTENANCE: Lasts up to 20 times longer than a standard incandescent bulb and twice as long as many standard CFLs. With 86% mean lumen output maintained, brightness stays consistent well into the lamp's lifespan. - UP TO 75% ENERGY SAVINGS VS. INCANDESCENT: At just 26W, this 4-pin CFL bulb uses about a quarter of the energy of a comparable incandescent. Pair with an electronic dimming ballast to push savings even further when full brightness isn't needed. - DIMMABLE CFL BUILT FOR DEMANDING APPLICATIONS: Ideal for recessed downlights, showcase lighting, exit signs, offices, boardrooms, classrooms and hotel lobbies. A reliable 4-pin light bulb built to provide long-lasting, controllable light. ## Why choose this product **Superior Illumination & Longevity** — Sylvania's DULUX ECOLOGIC CFLs are engineered for efficiency and endurance. Unlike standard bulbs, these 26W, 3500K units offer a 20,000-hour lifespan and maintain consistent brightness. Their 82 CRI ensures colors appear true, making them perfect for environments where light quality is paramount. Imported directly, these bulbs provide a reliable, long-term lighting solution for Indian businesses and homes seeking quality and performance. **Ideal For Task & Accent Lighting, Not General Room Illumination** — These bulbs excel in recessed downlights, showcase lighting, exit signs, offices, and hotel lobbies where focused or controlled light is needed. They are dimmable with electronic ballasts for adjustable brightness. However, they are not suitable for general room illumination where a wider beam angle or higher lumen output might be preferred. For broad ambient lighting, consider dedicated LED fixtures. ## How to use 1. Verify your existing light fixture uses a G24q-3 4-pin base and is designed for electronic ballasts. This bulb is not compatible with standard incandescent sockets or magnetic ballasts. — Ensure Compatibility 2. Turn off the power to the fixture. Carefully insert the 4-pin base of the Sylvania CFL bulb into the G24q-3 socket until it is securely seated. — Install the Bulb 3. Restore power to the fixture. The bulb should illuminate. If you have a compatible electronic dimming ballast, test the dimming function to adjust brightness as needed. — Power On and Test ## Product details | Field | Value | |---|---| | Operating Life | 20,000 hours | | Lumen Maintenance | 86% mean lumen output | | Energy Savings | Up to 75% vs. incandescent | | Cost per use | 20,000 hours at ₹2,064 for 10 bulbs — ₹0.10 per hour | | Shelf life after opening | Not applicable (durables) | | Reapplication math | Not applicable (lighting) | | Contraindications | Requires electronic ballast; not for general room illumination; not compatible with standard incandescent sockets. | | Allergens / common irritants | Contains mercury (requires proper disposal) | | Brand | Sylvania (LEDVANCE) | | Model Number | 20673 | | Part Number | S6739 | | Bulb Type | Compact Fluorescent Lamp (CFL) | | Style | Double Tube | | Base Type | G24q-3 (4-Pin) | | Shape | T4 | | Diameter | 1.4 inches (3.56 cm) | | Height | 6.6 inches (16.76 cm) | | Material | Glass | | Color Temperature | 3500K (Neutral White) | | Color Rendering Index (CRI) | 82 | | Light Output | 1825 lumens (maximum) | | Wattage | 26W | | Incandescent Equivalent | 26W (approx. 100W incandescent) | | Voltage | 100-120V (compatible with Indian mains) | | Dimmable | Yes (with electronic dimming ballast) | | Usage | Indoor | | Package Quantity | 10 bulbs | | Item Weight | 1.12 lbs (0.51 kg) for the 10-pack | ## Frequently asked questions ### Is this Sylvania 20673 CFL bulb safe for use in India? Yes, the Sylvania 20673 CFL bulb is designed for 100-120V systems and is compatible with Indian mains voltage. It is imported directly to India, ensuring you receive an authentic product with all customs duties and GST included in the price. The bulb is suitable for indoor use in various fixtures. ### Are Sylvania CFL bulbs healthy for indoor use? Sylvania CFL bulbs are generally considered safe for indoor use when handled properly. They contain a small amount of mercury, so proper disposal is recommended. The 3500K neutral white light is easy on the eyes for task lighting, and the 82 CRI ensures colors appear natural, contributing to a comfortable environment. ### How do I choose the right Sylvania CFL bulb for my needs? Consider the base type (G24q-3 for this model), wattage (26W), color temperature (3500K neutral white), and CRI (82 for accurate color). This Sylvania 20673 bulb is ideal for recessed downlights, showcase lighting, and offices where dimmable, energy-efficient, and long-lasting light is required. ### How to use the Sylvania 20673 CFL bulb effectively? Install the 4-pin G24q-3 base bulb into compatible electronic ballast fixtures. For optimal energy savings and dimming control, pair it with an electronic dimming ballast. Ensure the bulb is used in an indoor environment as intended for task or accent lighting. ### What is the best use for a Sylvania 20673 CFL bulb? The best use for the Sylvania 20673 CFL bulb is in applications requiring consistent, high-quality light with energy efficiency and long life. This includes recessed downlights, showcase lighting, exit signs, offices, boardrooms, and hotel lobbies where accurate color rendering and dimmability are beneficial. ### Can I use Sylvania CFL bulbs daily? Yes, Sylvania CFL bulbs are designed for daily use and long operating hours. With a lifespan of 20,000 hours, they are built to last, making them a reliable choice for consistent daily illumination in commercial and residential indoor settings. ### What are the side effects of Sylvania CFL bulbs? CFL bulbs contain a small amount of mercury, which requires careful handling and proper disposal to avoid environmental contamination. They may also flicker slightly if not paired with a compatible electronic ballast. The light itself is generally considered safe for indoor use. ### What are the benefits of Sylvania CFL bulbs? Benefits include significant energy savings (up to 75% vs. incandescent), a long lifespan (20,000 hours), consistent brightness with 86% lumen maintenance, accurate color rendering (82 CRI), and dimmability when used with compatible electronic ballasts, making them ideal for task and accent lighting. ## Compliance No product-specific compliance warnings identified. Standard imported-goods terms apply: customs duties & GST paid; for personal use in India; follow the manufacturer's usage instructions on the packaging. ## Images 1. https://images.crowcrowcrow.com/B00P807QIG-0.webp --- Source: https://crowcrowcrow.com/p/sylvania-20673-cf26dd-835-eco-26-watt-3500k-4-pin-double-tube-fluorescent-lamp/uwv4161 Returns: 14 days, free pickup, full refund on genuine issues. Shipping: Free across India, 20-23 days. Prices are all-inclusive (duties + GST).