{"product_id":"rh-logic-400-office-chair-silver-base","title":"RH Logic 400 Ergonomic Office Chair - Silver Base","description":"\u003ch2\u003eRH Logic 400 Office Chair with Complete Feature Set\u003c\/h2\u003e\n\u003cp\u003eThe RH Logic 400 delivers professional-grade seating engineered for continuous use environments. Built with a 150kg (23.5 stone) rated gas lift and 2PP (Two-Point-Principle) ergonomic technology, this chair supports active sitting while maintaining optimal posture throughout extended work periods.\u003c\/p\u003e\n\u003ch3\u003eAdvanced Ergonomic Features\u003c\/h3\u003e\n\u003cp\u003eThe 2PP technology allows natural body movement without compromising the chair's core support settings. This design reduces fatigue and maintains concentration during long shifts. The inflatable lumbar pump provides customizable lower back support, while the adjustable backrest height accommodates different body types.\u003c\/p\u003e\n\u003cp\u003eSeat adjustments include height (410-530mm) and depth (475-535mm) controls, ensuring proper leg positioning and circulation. The 8E armrests offer three-way adjustment - height (215-295mm above seat), depth, and width - for precise arm support positioning.\u003c\/p\u003e\n\u003ch3\u003eHeavy-Duty Construction for 24\/7 Operations\u003c\/h3\u003e\n\u003cp\u003eDesigned for round-the-clock environments, the RH Logic 400 handles demanding workplace conditions. The adjustable tilting resistance controls forward and backward movement, providing stability across different tasks. \u003c\/p\u003e\n\u003ch3\u003eRH Logic 400 Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e150kg (23.5 stone) rated gas lift\u003c\/li\u003e\n\u003cli\u003e2PP upright posture and active sitting technology\u003c\/li\u003e\n\u003cli\u003eSeat height and depth adjustment\u003c\/li\u003e\n\u003cli\u003eInflatable lumbar pump support\u003c\/li\u003e\n\u003cli\u003eAdjustable tilting resistance forwards and backwards\u003c\/li\u003e\n\u003cli\u003eBackrest height adjustment\u003c\/li\u003e\n\u003cli\u003e8E Armrests - height, depth and width adjustable armrests\u003c\/li\u003e\n\u003cli\u003eAn option of adding a height and depth adjustable headrest\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eSilver aluminium base\u003c\/li\u003e\n\u003cli\u003eFully upholstered seat and backrest\u003c\/li\u003e\n\u003cli\u003eAvailable in the \u003cstrong\u003e18 different colours\u003c\/strong\u003e in Select (Gabriel) Fabric\n\u003cul\u003e\n\u003cli\u003eSelect is a classic woollen upholstery fabric with superior durability and excellent stretch. It adds an extra dimension of functionality and classic elegance to all kinds of furniture and is highly suitable for heavy use environments.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSelect Fabric Range\u003c\/h3\u003e\n\u003cp\u003eAvailable in 18 colours using Select (Gabriel) fabric - a woollen upholstery material engineered for heavy-use environments. The fabric combines durability with stretch properties, maintaining appearance and comfort through intensive daily use.\u003c\/p\u003e\n\u003ch3\u003eEnvironmental Certification\u003c\/h3\u003e\n\u003cp\u003eThe RH Logic 400 meets GREENGUARD Certification Programme standards for low chemical emissions. Components incorporate recycled materials, and manufacturing processes utilise low-energy technology.\u003c\/p\u003e\n\u003ch3\u003eAdditional Options\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCastors for hard floors\u003c\/li\u003e\n\u003cli\u003eExtra large seat\u003c\/li\u003e\n\u003cli\u003eCoat-hanger attached to the headrest\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eDimensions (mm)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeat Height:\u003c\/strong\u003e\u003cspan\u003e 410 - 530\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBackrest Height With Lumbar Pump:\u003c\/strong\u003e\u003cspan\u003e 620\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBackrest Width With Lumbar Pump:\u003c\/strong\u003e\u003cspan\u003e 440\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeat Depth:\u003c\/strong\u003e\u003cspan\u003e 475 - 535\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeat Width:\u003c\/strong\u003e\u003cspan\u003e 465\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eArmrest Height Above Seat:\u003c\/strong\u003e\u003cspan\u003e 215 - 295\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan\u003eFrequently asked questions\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the difference between the RH Logic 400 and the RH Logic 300?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe primary difference is the backrest height. The RH Logic 400 features a high backrest (620mm) designed to provide support across the full length of the spine, including the shoulders. This makes it the preferred choice for taller users or those who require more comprehensive upper-back support. The Logic 300 uses a medium-back design but shares the same ergonomic movement technology.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow does the RH 2PP (Two-Point-Principle) support active sitting?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe 2PP mechanism ensures that the chair's pivot points are perfectly synchronized with your body's natural joints at the hips and knees. This allows you to move freely and recline while the backrest maintains constant, upright support. By encouraging micro-movements, the chair helps maintain blood circulation and reduces fatigue during long shifts.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan the RH Logic 400 be used for 24-hour shift work?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes. The RH Logic 400 is specifically engineered and certified for 24\/7 use. It is built with high-specification components, including a reinforced aluminium base and a heavy-duty gas lift rated for 150kg (23.5 stone). For intensive environments, it also features exchangeable seat and backrest pads to extend the life of the chair.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow do I adjust the inflatable lumbar support?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe inflatable lumbar pump is an integrated air cell in the backrest. You can manually adjust the firmness by using the hand pump located under the seat or on the side of the backrest. This allows you to fine-tune the support to the exact curve of your lower back, providing relief for musculoskeletal issues and back pain.\u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cb data-path-to-node=\"11\" data-index-in-node=\"0\"\u003eDoes the silver base come with matching components?\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eYes, models with the silver aluminium base are typically fitted with a matching silver gas stem and trim to ensure a cohesive, high-specification look across the entire chair.\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003c!-- notionvc: 23dc13a8-2a2b-4bc4-8659-882ab91aeca4 --\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eAs these chairs are made to order delivery is normally 4 to 6 weeks. We will inform you of the date of delivery prior to dispatch.\u003c\/p\u003e\n\u003cp\u003eAlthough we sell on the internet we like to think that people buy from people so why not call us to discuss your needs. We love to talk and advice is free: \u003cstrong\u003e01473 807500.\u003c\/strong\u003e\u003c\/p\u003e","brand":"RH","offers":[{"title":"No Headrest \/ No Armrests","offer_id":51344662823243,"sku":"RH-LOG-400-AF-1","price":774.0,"currency_code":"GBP","in_stock":true},{"title":"No Headrest \/ Height Depth \u0026 Width Adjustable Armrests","offer_id":56993610563915,"sku":null,"price":882.0,"currency_code":"GBP","in_stock":true},{"title":"Height \u0026 Depth Adjustable Headrest \/ No Armrests","offer_id":51344662856011,"sku":"RH-LOG-400-AF-2","price":842.0,"currency_code":"GBP","in_stock":true},{"title":"Height \u0026 Depth Adjustable Headrest \/ Height Depth \u0026 Width Adjustable Armrests","offer_id":56993610596683,"sku":null,"price":950.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0913\/0275\/6683\/files\/03BCD7_front-RS.jpg?v=1745531021","url":"https:\/\/lockwoodhume.co.uk\/products\/rh-logic-400-office-chair-silver-base","provider":"LockwoodHume Office Environments","version":"1.0","type":"link"}