Dimensions: 37.48" High x 86.22" Wide x 57.09" Deep; Arms: 37.48" High x 57.09" Wide x 3.54" Thick; Siderail: 6.1" High x 76.77" Long x 0.79" Thick; Top Slats: 1.77" Wide x 55" Long x 0.71" Thick; Height from Floor to Top of Side Panel: 37.48" High; Trundle: 9.65" High x 75.98" Wide x 40.35" Deep; Bottom Front Trundle Panel: 9.65" High x 75.98" Long x 1.18" Thick; Trundle Slats: 1.77" Wide x 39.25" Long x 0.71" Thick; Inside Dimensions (Mattress Size): 54" Wide x 74" Deep