Henry Walter (HW) Klein was born in Norway on June 19, 1919. He initially wanted to be a sailor and joined the Royal Ship in Norway in 1937. During World War II, Klein studied and joined the Norwegian Royal Marine and spent two years working as a cabinetmaker. In 1949, he attended Frederikberg Tekniske Skole in Denmark for three years. And in 1952, he began referring to himself as "boligknosulent," also known as an interior consultant.

Klein returned to Norway and started his own interior design business. The majority of his works were constructed from teak wood. Also, Klein developed a new method of manufacturing plastic furniture. With his method, Klein worked with an engineer to accelerate the manufacturing process. He sold the patent to 46 people, including Bramin Mbler Furniture.

In 1960, Klein moved to Bramming, Denmark and began working with Bramin. During this time, Klein used his furniture manufacturing technique to help Bramin produce upholstery, which helped the company bolster its brand and boost its profits. Bramin closed its doors in the 1980s, and Klein began working from home. He started designing many couches for the American market from his San Francisco home. In addition, Klein designed furniture for bedrooms, living rooms, churches and hotels and even for the Prince of Saudi Arabia.