The Twin Trundle by KD Frames now has more slats! The slat spacing is now 2.8 inches to accommodate most mattresses on the market today. The Twin Trundle is a perfect solution for extra bed space without taking up extra room. It is equipped with four sturdy wheel for easy gliding and can support up to 300 pounds. This bed is designed to fit under all sizes of the Nomad, Charleston, and Lexington platform beds - EXCEPT FOR THE KING NOMAD WHICH COMES WITH CENTER LEGS. Like all of our products the Trundle bed is eco-friendly and chemical-free with clean lines and subtle design. PDF of assembly instructions can be found here.