Armstrong Sofa Fabric Swatch: Fabric Samples Avaliable by Mail Cover Choices: Sierra Red Seating Comfort: Medium Frame Construction: The majority of the frames are constructed with all solid kiln dried hardwood. The remaining frames consist of solid kiln dried Hardwood and Engineered Wood Products. The stress points are reinforced with blocks to secure a long lasting frame. Spring System: The sinuous springing system is manufactured with a reinforced 16 gauge border wire to maintain a uniform seating. Double springs are used on the ends nearest the arms to give balance in the seating.