Zinus Modern Studio 14 Inch Platform 1500 Metal Bed Frame, Mattress Foundation, no Boxspring needed, Wooden Slat Support, Good Design Award Winner, Black, Twin Strong mattress support with 10 wood slats prevents sagging and increases mattress life Assembles easily in minutes Plastic feet protect your floors, 5 year limited warranty Non-slip tape on the wooden slats prevents your mattress from moving Please follow instructions for proper assembly. Numbers or Arrows must match on all four corners and holes aligned. Improper assembly will result in the slats being too wide and Part C being too short