{"product_id":"large-square-2d-28w-4-pin-fluorescent-tube-electronic-ballast-compatible-cool-white-4000k","title":"Large Square 2D 28w 4 Pin Fluorescent Tube – Electronic Ballast Compatible Cool White 4000K","description":"\u003ch3\u003e\u003cspan\u003eOverview\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan\u003eThis 2D 28-watt 4-pin fluorescent tube combines a generously sized square design with advanced electronic ballast compatibility, delivering broad, uniform illumination with improved energy efficiency and quieter operation. The expanded 198mm x 198mm footprint makes it ideal for larger ceiling fittings, commercial light boxes, and spacious residential areas where substantial light coverage is required alongside modern electronic control gear. Operating with a compatible electronic ballast (typical for 4-pin configurations), it produces a crisp cool white light at 4000K, offering balanced, neutral illumination that enhances visibility and creates a clean, professional ambiance suitable for contemporary interiors.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan\u003eEngineered with a 4-pin base, this lamp is specifically designed for dedicated 2D fittings equipped with electronic ballasts, a configuration commonly found in modern residential, commercial, and hospitality installations. With an average rated life of approximately 10,000 hours, it offers extended service life that significantly reduces maintenance frequency and replacement costs. The non-dimmable operation ensures stable, flicker-free performance, making it a reliable choice for kitchens, living areas, retail displays, office spaces, and commercial environments where consistent, energy-efficient lighting in a larger square form factor with crisp white illumination is essential.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eKEY FEATURES\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003eLarge Square 2D Design with Electronic Compatibility\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Expanded 198mm x 198mm footprint provides broad, even light distribution; 4-pin configuration designed for electronic ballasts.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003eEnergy-Efficient Operation\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Consumes only 28 watts, offering significant energy savings with the added efficiency benefits of electronic ballast operation.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003eExtended Service Life\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Rated for approximately 10,000 hours of average use, minimizing lamp replacement frequency.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003eCrisp Cool White Light\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Provides 4000K color temperature, offering balanced, neutral illumination ideal for task-oriented and commercial environments.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003e4-Pin Base Configuration\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Designed specifically for fixtures utilizing electronic ballasts, ensuring improved performance and reduced flicker.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan\u003eTechnical Specifications\u003c\/span\u003e\u003c\/h3\u003e\n\u003cdiv class=\"ds-scroll-area ds-scroll-area--show-on-focus-within _1210dd7 c03cafe9\"\u003e\n\u003cdiv class=\"ds-scroll-area__gutters\"\u003e\n\u003cdiv class=\"ds-scroll-area__horizontal-gutter\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv class=\"ds-scroll-area__vertical-gutter\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cspan\u003eSpecification\u003c\/span\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cspan\u003eDetail\u003c\/span\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003eWattage\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e28W\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003eLamp Type\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e2D Compact Fluorescent (Square)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003eBase Type\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e4 Pin\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003eColor Temperature\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e4000K (Cool White)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003eDimmability\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eNon-dimmable\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003eAverage Rated Life\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eApprox. 10,000 hours\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003eDimensions\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eLength: 198mm, Width: 198mm\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch3\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003ch3\u003e\u003cspan\u003eFrequently Asked Questions (FAQs)\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003e1. What is the difference between 2-pin and 4-pin 2D lamps for this 28w size?\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e2-pin 2D lamps are designed to operate with magnetic ballasts, while 4-pin versions like this 28W lamp are intended for electronic ballasts. Check your fixture’s ballast type before purchase to ensure compatibility.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003e2. Is this lamp dimmable?\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eNo, this 2D 28w 4-pin fluorescent tube is non-dimmable. Using it with a dimmer switch may cause flickering, reduced lamp life, or damage to the lamp and electronic ballast.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003e3. Can I use this 4-pin lamp in a fixture designed for a 2-pin 2D tube?\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eNo, the pin configuration and ballast requirements are different. A 4-pin lamp requires an electronic ballast, while a 2-pin fixture uses a magnetic ballast. Always match the pin configuration and ballast type.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003e4. Can I use this 28w lamp to replace a 16w or 38w 2D lamp?\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eNo, replacement must be made with a lamp of the same wattage and pin configuration unless the fixture manufacturer specifies otherwise. This 28W model is intended as a direct replacement for other 28W 4-pin 2D tubes.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003e5. Where is this lamp best applied?\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eIts larger square size, crisp 4000K output, and electronic ballast compatibility make it ideal for modern flush-mounted ceiling fittings in kitchens and living areas, commercial light boxes, retail display areas, office spaces, and contemporary residential and commercial environments requiring broad, neutral illumination with quiet, flicker-free operation.\u003c\/span\u003e\u003c\/p\u003e","brand":"CK-Electricals","offers":[{"title":"Default Title","offer_id":57193684205950,"sku":null,"price":6.91,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0985\/3832\/4350\/files\/2D28_2ec1e6ca-ce40-47c1-95cd-7c1156d956b2.jpg?v=1774983392","url":"https:\/\/ssmelectric.co.uk\/products\/large-square-2d-28w-4-pin-fluorescent-tube-electronic-ballast-compatible-cool-white-4000k","provider":"SSM ELECTRIC","version":"1.0","type":"link"}