Upgrade your bed with the 0.75-inch Heavy Duty Mattress Support Wooden Slats from Onetan. These eco-friendly black spruce wood slats provide exceptional support and ventilation, reducing the need for mattress airing. The equidistant slats ensure optimal mattress support, while the noise-free and stress-absorbing design guarantees a peaceful sleep. With a variety of sizes available, including Twin, Twin-XL, Full, Full XL, Queen, King and California King, these slats are the perfect replacement for old, broken or weak slats. Plus, no assembly is required, making it easy to upgrade your bedframe. Features: True to size for standard beds Center support required for Full, Full XL, Queen, King, and California King sizes Strong and sturdy black spruce wood slats for high durability Great replacement for old, broken or weak slats No assembly required, linked together for easy installation Ideal for daybeds, bunk beds and platform beds Includes wood slats only (bed frame not included)