{"product_id":"drumback-task-chair-drum-back-ergonomic-chair","title":"Drumback Task Chair","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eA drum-back construction that behaves like neither a mesh chair nor an upholstered one\u003c\/strong\u003e – Drumback stretches mesh over a polypropylene back shell rather than across an open frame. The result combines the airflow of a mesh back with the structural stability of a solid one, in a single moulded form.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCertified for sustained, intensive use\u003c\/strong\u003e – On the Standard specification, Drumback carries BS 5459-2, the British Standard covering severe heavy-duty and 24-hour use seating. Both specifications carry a GS safety certificate to 110 kg. Its automatic synchro-mechanism responds to bodyweight without manual tension setting, with an additional fine-tuning control for those who want to override it.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Highlights:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cp\u003e\u003cstrong\u003eBS 5459-2 certified on the Standard specification\u003c\/strong\u003e – the British Standard for severe heavy-duty and 24-hour use\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cstrong\u003eAutomatic synchro-mechanism with fine-tuning control\u003c\/strong\u003e – responds to your weight, then lets you adjust further\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cstrong\u003eHeight-adjustable backrest, 8 positions\u003c\/strong\u003e – standard, not an option\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cstrong\u003eSliding seat depth, 6 positions\u003c\/strong\u003e – standard, not an option\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cstrong\u003e3-position tilt limiter with free-flow recline\u003c\/strong\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cstrong\u003eIntegrated function buttons\u003c\/strong\u003e – controls sit within the mechanism housing rather than protruding beneath the seat\u003c\/p\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eErgonomics\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eTwo adjustments that are usually extras, included as standard\u003c\/strong\u003e – backrest height and seat depth are both adjustable out of the box, which is unusual at this specification level and covers the two dimensions most responsible for a poor postural fit.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cp\u003e\u003cstrong\u003eAutomatic weight-responsive recline:\u003c\/strong\u003e The mechanism sets its own resistance from your bodyweight, so the chair works correctly without setup\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cstrong\u003eAdditional fine-tuning control:\u003c\/strong\u003e Override the automatic setting if you prefer a firmer or looser recline\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cstrong\u003e8-position height-adjustable backrest:\u003c\/strong\u003e Move the lumbar contact point up or down to meet your spine\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cstrong\u003e6-position sliding seat:\u003c\/strong\u003e Set seat depth to your femur length and relieve pressure behind the knee\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cstrong\u003e3-position tilt limiter:\u003c\/strong\u003e Cap how far the chair reclines, or leave it free-flowing\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cstrong\u003eMesh over a moulded back shell:\u003c\/strong\u003e Airflow through the back without the frame flex of an open mesh panel\u003c\/p\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecs \u0026amp; Delivery\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"text-align: left;\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"text-align: left;\"\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum user weight\u003c\/td\u003e\n\u003ctd\u003e110 kg — GS certified\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRecommended daily usage\u003c\/td\u003e\n\u003ctd\u003eBS 5459-2 certified for severe heavy-duty \/ 24-hour use\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMechanism\u003c\/td\u003e\n\u003ctd\u003eAutomatic synchro-mechanism with additional fine-tuning control, free-flow recline, lock and 3-position tilt limiter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackrest\u003c\/td\u003e\n\u003ctd\u003eHeight-adjustable over 8 positions; mesh stretched over polypropylene back shell\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeat depth adjustment\u003c\/td\u003e\n\u003ctd\u003eSliding seat, 6 positions, standard\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeat construction\u003c\/td\u003e\n\u003ctd\u003eCold-moulded polyurethane foam; upholstery applied without adhesives\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBase \u0026amp; castors\u003c\/td\u003e\n\u003ctd\u003ePlastic five-star base with load-controlled twin castors to EN 12529\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCertifications\u003c\/td\u003e\n\u003ctd\u003eGS certificate (110 kg), BIFMA LEVEL 3, Blauer Engel, pollutant tested, ergonomics tested, Quality Office. BS 5459-2 certified\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAssembly\u003c\/td\u003e\n\u003ctd\u003eDelivered fully assembled\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eDelivery, returns \u0026amp; what's included\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cp\u003e\u003cstrong\u003eFree tracked UK delivery\u003c\/strong\u003e — made to order, approximately 4–5 weeks. Lead time varies with specification, so we confirm your exact date when you order.\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cstrong\u003e14-Day Hassle-Free Returns\u003c\/strong\u003e if the chair isn't the right fit (see full policy for details).\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cstrong\u003e5-year warranty\u003c\/strong\u003e on the chair; 2 years on the gas lift. UK-based support.\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cstrong\u003eFree Ultimate Ergonomics Pack\u003c\/strong\u003e — our 6-page guide to setup, posture and chair care, delivered by email after your order.\u003c\/p\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Viasit","offers":[{"title":"Standard (auto synchro-mechanism) \/ Black shell, black base (480) \/ G1","offer_id":54635453972817,"sku":"VIA-DRUM-480.1002-G1","price":559.0,"currency_code":"GBP","in_stock":true},{"title":"Standard (auto synchro-mechanism) \/ Black shell, black base (480) \/ G2","offer_id":54635454005585,"sku":"VIA-DRUM-480.1002-G2","price":579.0,"currency_code":"GBP","in_stock":true},{"title":"Standard (auto synchro-mechanism) \/ Black shell, black base (480) \/ G3","offer_id":54635454038353,"sku":"VIA-DRUM-480.1002-G3","price":589.0,"currency_code":"GBP","in_stock":true},{"title":"Standard (auto synchro-mechanism) \/ Black shell, black base (480) \/ G4","offer_id":54635454071121,"sku":"VIA-DRUM-480.1002-G4","price":619.0,"currency_code":"GBP","in_stock":true},{"title":"Standard (auto synchro-mechanism) \/ Black shell, black base (480) \/ G5","offer_id":54635454103889,"sku":"VIA-DRUM-480.1002-G5","price":659.0,"currency_code":"GBP","in_stock":true},{"title":"Standard (auto synchro-mechanism) \/ Black shell, black base (480) \/ G6 (leather)","offer_id":54635454136657,"sku":"VIA-DRUM-480.1002-G6","price":699.0,"currency_code":"GBP","in_stock":true},{"title":"Standard (auto synchro-mechanism) \/ Telegrey shell, black base (460) \/ G1","offer_id":54635454169425,"sku":"VIA-DRUM-460.1002-G1","price":559.0,"currency_code":"GBP","in_stock":true},{"title":"Standard (auto synchro-mechanism) \/ Telegrey shell, black base (460) \/ G2","offer_id":54635454202193,"sku":"VIA-DRUM-460.1002-G2","price":579.0,"currency_code":"GBP","in_stock":true},{"title":"Standard (auto synchro-mechanism) \/ Telegrey shell, black base (460) \/ G3","offer_id":54635454234961,"sku":"VIA-DRUM-460.1002-G3","price":589.0,"currency_code":"GBP","in_stock":true},{"title":"Standard (auto synchro-mechanism) \/ Telegrey shell, black base (460) \/ G4","offer_id":54635454267729,"sku":"VIA-DRUM-460.1002-G4","price":619.0,"currency_code":"GBP","in_stock":true},{"title":"Standard (auto synchro-mechanism) \/ Telegrey shell, black base (460) \/ G5","offer_id":54635454300497,"sku":"VIA-DRUM-460.1002-G5","price":659.0,"currency_code":"GBP","in_stock":true},{"title":"Standard (auto synchro-mechanism) \/ Telegrey shell, black base (460) \/ G6 (leather)","offer_id":54635454333265,"sku":"VIA-DRUM-460.1002-G6","price":699.0,"currency_code":"GBP","in_stock":true},{"title":"Standard (auto synchro-mechanism) \/ Telegrey shell, telegrey base (470) \/ G1","offer_id":54635454366033,"sku":"VIA-DRUM-470.1002-G1","price":589.0,"currency_code":"GBP","in_stock":true},{"title":"Standard (auto synchro-mechanism) \/ Telegrey shell, telegrey base (470) \/ G2","offer_id":54635454398801,"sku":"VIA-DRUM-470.1002-G2","price":599.0,"currency_code":"GBP","in_stock":true},{"title":"Standard (auto synchro-mechanism) \/ Telegrey shell, telegrey base (470) \/ G3","offer_id":54635454431569,"sku":"VIA-DRUM-470.1002-G3","price":609.0,"currency_code":"GBP","in_stock":true},{"title":"Standard (auto synchro-mechanism) \/ Telegrey shell, telegrey base (470) \/ G4","offer_id":54635454464337,"sku":"VIA-DRUM-470.1002-G4","price":639.0,"currency_code":"GBP","in_stock":true},{"title":"Standard (auto synchro-mechanism) \/ Telegrey shell, telegrey base (470) \/ G5","offer_id":54635454497105,"sku":"VIA-DRUM-470.1002-G5","price":689.0,"currency_code":"GBP","in_stock":true},{"title":"Standard (auto synchro-mechanism) \/ Telegrey shell, telegrey base (470) \/ G6 (leather)","offer_id":54635454529873,"sku":"VIA-DRUM-470.1002-G6","price":749.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/8523\/4769\/files\/Drumback-4701002-HP-R-blau.jpg?v=1788549297","url":"https:\/\/apexcomfort.co.uk\/products\/drumback-task-chair-drum-back-ergonomic-chair","provider":"Apex Comfort","version":"1.0","type":"link"}