Carl-Gustaf Hiort af Ornäs sofa

The Trienna sofa is a distinguished model designed by Carl-Gustaf Hiort af Ornäs and produced by Puunveisto Oy in Finland during the 1950s. This piece exemplifies Scandinavian mid-century modern design through its organic forms, structural precision, and the use of warm, natural materials characteristic of the period.

The sofa’s frame is crafted from solid walnut, displaying the deep amber-brown tones and distinct linear grain patterns typical of this hardwood. The wood surface is finely finished to highlight its natural depth and sheen. The design prioritizes sculptural geometry, particularly evident in the sharply angled legs and pronounced chamfered edges of the frame, which create a sense of lightness and architectural refinement.

A notable aspect of the sofa is the backrest construction, where each of the three seating sections is supported by individual woven panels integrated into the wooden frame. These panels feature a dynamic lattice pattern that adds visual texture and functional flexibility. The weaving is set within a sturdy yet elegant timber framework, offering durability alongside a handcrafted detail that is uncommon in mass-produced furniture of the time.

The upholstery has been recently renewed with high-quality wool fabric in a neutral taupe-gray shade. The tailoring is precise, featuring three separate back cushions and three corresponding seat cushions, all fitting neatly within the wooden frame. The sofa’s proportions are generous yet balanced, with a moderate seat height that encourages comfortable, upright seating.

Carl-Gustaf Hiort af Ornäs (1911–1996) was a notable Finnish designer and architect recognized for his role in the Finnish modernist movement. His work often reflects a combination of architectural clarity and sculptural refinement. Puunveisto Oy, the manufacturer, was known for its tradition of fine joinery and craftsmanship, collaborating with Ornäs on several pieces that advanced the field of modern domestic furniture.

The Trienna sofa represents a refined integration of artisanal woodworking and modernist design principles. It embodies the post-war Nordic design ethos through its honest use of materials, functional elegance, and subtle sculptural innovation.

The sofa measures 180 cm in width, 80 cm in depth, and 74 cm in height (approximately 70.9 x 31.5 x 29.1 inches), with a seat height of 38 cm (approximately 15 inches). The condition is excellent, with the walnut frame well preserved and the new upholstery providing a clean and fresh appearance.