Mainstays Half-Fold Steel Box Spring, Multiple Sizes: Structure made from durable, heavy-gauge steel for maximum strength Folds in half for convenient transport and storage No assembly required Made from steel; naturally resistant to bed bugs Coverlet adds support and increases breathability of the mattress Twin: open 74" x 38" x 7.5"; folded 38" x 4.17" x 44.13" Full: open 74" x 53" x 7.5"; folded 53" x 4.17" x 44.13" Queen: open 79" x 59.5" x 7.5"; folded 59.5" x 4.17" x 46.61" King (Comes with two): open 79" x 76" x 7.5"; folded 37.75" x 4.17" x 46.61" Weight Capacity: T/F 1,200 lbs; Q/K 2,400 lbs 5 year limited warranty Mattresses sold separately. Bed frames sold separately.

Mainstays Half-Fold Steel Box Spring, Multiple Sizes: Structure made from durable, heavy-gauge steel for maximum strength Folds in half for convenient transport and storage No assembly required Made from steel; naturally resistant to bed bugs Coverlet adds support and increases breathability of the mattress Twin: open 74" x 38" x 7.5"; folded 38" x 4.17" x 44.13" Full: open 74" x 53" x 7.5"; folded 53" x 4.17" x 44.13" Queen: open 79" x