Wood frame interchangeable with old overnight sleeper mechanism 2500 series.

You can't feel the metal cross bar under the mattress for super sleeping comfort.

Optional for partly assembled version with same quality as fully assembled version.

Partly assembled verison has four time of container loading quanity to save shipment cost but very easy to put together by customers.

Optional for air breath and firepoof polydeck for seat comfort.

Optional for real high leg 14cm version.