Shifman's Timeless Collection box spring provides unparalleled weight transfer and shock absorption for any mattress model in the collection (see list below) This premium 8-way hand-tied box spring is made from sustainably sourced Canadian spruce, furniture grade upholstery coils, imported Italian twine. It features elegant metal corner guards, Belgian damask covers, as well as all-natural cotton padding. Features 2 Profile Heights: High 8" or Low 6" 8-Way Hand-Tied Size Availability Twin: 39" x 75" Twin XL: 39" x 80" Full: 54" x 75" Queen: 60" x 80" King: 38" x 80" (each piece/2-piece box spring) CA King: 36" x 84" (each piece/2-piece box spring) * Product sizes are listed in Width x Length. All measurements are approximate and may vary slightly Compatible Models Our Song Slow Dance Ever After full list