The Zinus Quick Lock® Bunkie Board offers a slim, strong and sturdy foundation for your spring, memory foam, or Hybrid mattress. Made of premium steel and featuring the easy to assemble quick lock construction, this Bunkie board provides ideal mattress support. Compact packaging allows for tight interior spaces such as stairs and hallways. Available in Twin, Full, Queen, and King sizes. The Zinus Quick Lock® Bunkie Board will ensure long-lasting support and durability for your mattress.