The Lincoln WallBed is our most compact, least expensive solution to the need for sleep at the end of a long day at the office without going home or to a motel! Of course, it's also a great option for your home office if your house has limited space and you simply need a guest room! Please Note: This bed must be attached to a wall! We recommend 4 heavy screws into solid wall studs. Standard Features: *Gas piston with positive close mechanism with Limited Lifetime Warranty * Max mattress depth of 10" With 10" mattress, measurement from floor to top of mattress is approximately 19-20" Please Note: Memory Foam Mattresses may be too heavy to allow proper bed functions. *Manufactured hardwood face and sides *Choice of vertical or horizontal mattress **Please click on the link below for optional side units. You may pick and choose any side units listed in this link for your bed. You can also customize any side unit for an additional fee. You dream it - we build it! As always, this bed is available in your choice of wood species and stain colors!