Versonel Smart Loft Twin Conversion Dorm Steel Bed Frame SPP-LBCF IMPROVED DESIGN IN 2017 FOR EASIER ASSEMBLY AND A MORE STURDY FRAME Unit Does Not Include A Mattress Or Bed frame. Extension Only The frame can be adjusted to fit most twin sized bed frames 34-44"W x 70-94"L. Loft Bed frame receiver cups that hold the bed frame post measure 3.5" L x 4" W x 4.75" deep with a crossbar cutout 2.5" wide Strongest on Market  Hold up to 2,500 Pounds