{"product_id":"osram-lumilux-t5-he-21w-fluorescent-tube","title":"Osram Lumilux T5 HE 21W Fluorescent Tube","description":"\u003cdiv\u003e\n\u003cp\u003eAn Osram Lumilux HE (High Efficiency) T5 fluorescent tube, 21W, G5 base — an efficient slim tube for office and retail ceiling fittings.\u003c\/p\u003e\n\u003ch2\u003eWill this fit my fixture?\u003c\/h2\u003e\n\u003cp\u003eReplacing an identical existing 21W G5 T5 tube is straightforward once power is off. New fittings need an electrician.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSlim G5 base, 16mm diameter T5 tube\u003c\/li\u003e\n\u003cli\u003eHigh Efficiency (HE) range — up to ~97 lm\/W\u003c\/li\u003e\n\u003cli\u003eAvailable in 830 Warm White, 840 Cool White, and 865 Daylight\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eWattage\u003c\/td\u003e\n\u003ctd\u003e21W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBase\u003c\/td\u003e\n\u003ctd\u003eG5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal Length\u003c\/td\u003e\n\u003ctd\u003e849mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDiameter\u003c\/td\u003e\n\u003ctd\u003e16mm (T5)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLuminous Flux\u003c\/td\u003e\n\u003ctd\u003e2000 lm (840) \/ 1925 lm (865)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eColour Temperature\u003c\/td\u003e\n\u003ctd\u003e3000K \/ 4000K \/ 6500K\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCRI\u003c\/td\u003e\n\u003ctd\u003e≥80\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRated Life\u003c\/td\u003e\n\u003ctd\u003e24,000 hours (B50), service life 19,000 hours\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eOffice and retail ceiling lighting\u003c\/li\u003e\n\u003cli\u003eCommercial fittings prioritising energy efficiency\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWill this fit my fixture?\u003c\/strong\u003e\u003cbr\u003eIf your existing tube is a G5-base T5 tube around 849mm, this is a direct swap.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDoes this need a starter?\u003c\/strong\u003e\u003cbr\u003eOn conventional ballast fittings, yes; on electronic ballast, no separate starter is needed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHow is this different from the 28W HE tube?\u003c\/strong\u003e\u003cbr\u003eSame HE family and base, but this 21W tube is shorter (849mm vs 1149mm) and gives lower output — check your fitting's length before switching.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhich colour temperature should I choose?\u003c\/strong\u003e\u003cbr\u003e830 for hospitality, 840 for offices, 865 for task-focused retail and workshop areas.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Osram","offers":[{"title":"Cool White (4000K)","offer_id":44111712583779,"sku":"OSTUBE21WT5840","price":21.0,"currency_code":"AED","in_stock":true},{"title":"Warm White (3000K)","offer_id":44124816244835,"sku":"OSTUBE21WT5830","price":21.0,"currency_code":"AED","in_stock":true},{"title":"Cool Daylight (6500K)","offer_id":44124816277603,"sku":"OSTUBE21WT5865","price":21.0,"currency_code":"AED","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0570\/6570\/1475\/files\/412BEfTka0L._AC_SL1500.jpg?v=1787498294","url":"https:\/\/www.deluxeuae.com\/products\/osram-lumilux-t5-he-21w-fluorescent-tube","provider":"Deluxe Electricals","version":"1.0","type":"link"}