The Dual-Back Ergonomic Swivel Office Chair with Height Adjustment (model OFC-DB-GR-001) is an unbranded ergonomic office task chair designed for balanced support and versatile workspace use, with a clean, contemporary visual profile defined by light grey upholstered seating surfaces paired with crisp white structural components. Its layout features a split dual-panel backrest positioned over a contoured padded seat, with fixed padded armrests spaced to leave clear access to desk surfaces, mounted atop a smooth five-star caster base for a streamlined, unobtrusive presence in professional and personal work settings. Built for consistent long-term use, the chair combines targeted material selection across every structural and contact point. The seat uses a 90mm thick high-resilience molded polyurethane foam core with 45 kg/m³ density, wrapped in 0.8mm thick 100% polyester woven mesh fabric, while the 70mm thick backrest uses medium-density molded polyurethane foam with 38 kg/m³ density and matching mesh upholstery. The structural back frame is constructed from 5mm thick glass-fiber reinforced white polypropylene, armrests feature injection-molded white polypropylene bases with soft padded TPU tops, and height adjustment is delivered via a 50mm diameter chrome-plated Class 3 steel gas cylinder. The tilt chassis is made from 2.5mm thick black powder-coated stamped steel, the five-star base uses 4mm thick glass-fiber reinforced white nylon, and dual-wheel polyurethane casters with black nylon brackets support smooth movement. All foam components deliver a 55% rebound rate for consistent comfort over extended seating periods. Functional features are tailored to dynamic work needs: the right-side lever controls 100mm of vertical seat height adjustment, the chair enables full 360-degree swivel for easy access to surrounding workspace areas, and the backrest offers 12 degrees of lockable backward tilt with adjustable tension to suit user preference. The independent dual back panels flex 5 degrees outward to conform to natural spinal curvature, delivering targeted support across the 240mm tall lumbar zone, while fixed armrests are positioned to support forearms at standard typing height. The casters are rated for 40000 rolling durability cycles, the chair supports a maximum static user weight of 120 kg with a 136 kg seat surface static load rating, and the unit weighs 14 kg net for easy repositioning. This chair is suited for a broad range of settings: it supports 8-hour daily desk work for general staff in open-plan office workstations, its 640mm wide footprint fits compact home office study spaces without crowding small desks, its understated design works for short to medium duration seating in meeting and conference rooms, its robust build withstands frequent rotating use in start-up co-working spaces, and its lightweight frame and smooth casters enable quick room reconfiguration for training room layouts. It pairs ideally with 2.4m executive desks for coordinated workspace setups. For procurement planning, note that each unit ships as one set across two cartons, with a packaged gross weight of 23 kg per set and total carton volume of 0.26 m³.