Box Spring, King Size Bed Frame with Washable Fabric Cloth, Heavy Duty Metal Frame for King Bed, 9.1 in Mattress Foundation, 3500 lbs Max Weight Capacity, Easy Assembly, 79.1 x 75.8 x 9.1 in Yard Waste Bins The cement post base is

The cement post base is suitable for 8" x 8" posts

and shutter

Built-in electronic ignition design allows for automatic lighting

Keep water and dust from compromising your electrical work

Box Spring, King Size Bed Frame with Washable Fabric Cloth, Heavy Duty Metal Frame for King Bed, 9.1 in Mattress Foundation, 3500 lbs Max Weight Capacity, Easy Assembly, 79.1 x 75.8 x 9.1 in Yard Waste Bins The cement post base isSolid support, easy setup for a restful sleep! This box spring supports up to 3500 lbs 1587. 57 kg, with easy installation, sturdiness, and durability to enhance your sleep experience. Made from thickened metal material, our bed box provides stable support without wobbling, bending, or sagging, unlike thinner frames. Featuring a non slip fabric cloth, it easily adapts to spring, memory foam, latex, and other types of mattresses, preventing slipping