Chelsea Home Furniture 3662001-S L Shaped Futon Loft Bed with Underbed Storage, 68" H, Honey The rails will connect to the bed ends by a 3.5 inch lag bolt for strength Solid plantation-grown pine Actual product weights may vary based on the thickness of wood used. With any wood products, expect some deformities and knots that come natural. Constructed of solid pine for strength and durability This L shaped loft bed holds two standard size twin size mattresses on the top bunks and a full size futon on the bottom bunk