✅【 METAL STRUCTURE QUEEN BOX SPRING ONLY 】 Reinforced square tubular steel frame with center support bracing insures stability and supports up to 3000lbs. Sturdy square steel slats can support heavier deluxe mattress and also easily withstand the pressure of 4 to 6 people without any sags. ✅【 LOW PROFILE BOX SPRING QUEEN SIZE, NOISE FREE 】 Real heavy-duty Square Steel Frame - made of 1inch(L)x 1inch(W) * 0.8mm (Thickness) fully automatic painted rust-resistant steel pole, each pole & support frame are seamlessly welded tightly at both ends to make the whole structure secure & firm, prevents structural twisting and no noise! Extra 20 removable beams enable TATAGO box spring surface super flat, much more comfortable and securer ✅【 9-Inch HEIGHT MATTRESS FOUNDATION, FULL/QUEEN/KING SIZE AVAILABLE FOR CHOOSE 】 9 inch box spring fit most lower bed frames and mattresses, TATAGO also provides more collocation options, like 4/5/7 inch height - bring one or more to enjoy a better sleep for your family.