The KETAI SF-LW-311-DBR Dark Brown Leather Wood-Trim 3+1+1 Living Room Sofa Set brings a polished, formal seating solution tailored for both refined residential and professional commercial spaces. Its cohesive 3+1+1 configuration centers on one three-seat sofa paired with two matching single armchairs, arranged to support structured conversational layouts with balanced visual weight; the deep dark brown top-grain cowhide upholstery is complemented by polished espresso-finish solid hardwood trim along exposed arm edges and feet, creating a timeless, sophisticated silhouette that aligns with traditional and formal design schemes. Built for long-term stability, the set’s internal load-bearing frame combines kiln-dried solid wood and 15mm plywood, while the seat suspension uses 3.6mm manganese steel sinuous springs paired with elastic webbing to deliver consistent support. Seat cushions feature a core of pocket coils topped with 45D high-resilience foam with a 60% rebound rate, with a total seat cushion thickness of 150mm, while back cushions use 120mm thick foam. Exposed wood surfaces are finished with UV-cured scratch-resistant clear lacquer, and nylon anti-scratch glides fitted to the bottom of wood block feet protect flooring from scuffs during use or repositioning. Each individual seat supports up to 136kg, bringing total set weight capacity across its five seats to 680kg. Fixed attached seat cushions simplify daily upkeep, while removable zippered back cushion covers allow for easy cleaning. The set arrives with main frames pre-assembled, requiring only leg attachment with included hardware for setup. Per-seat width on the three-seat sofa measures 680mm, with 550mm seat height from the floor, 680mm usable seat depth, 660mm armrest height from the floor, 600mm backrest height from the seat surface, and 180mm armrest width at its widest point, creating generously proportioned, comfortable seating for extended use. This set is ideally suited for formal residential living rooms designed for structured guest seating, as well as executive office reception areas and visitor waiting zones where durable, professional design is a priority. For procurement, teams should note the set ships across two cartons, with a reference assembly time of 40 minutes per set, total set net weight of 220kg, and reference packaged gross weight of 110kg per carton, to align delivery and installation planning with site requirements.