The right way to assemble your crib may vary depending on the brand you have, but the general process is usually the same for most brands. This way you can reach down into the crib more easily while attaching the support. If you have a crib with two drop rails then you will attach the mattress support before attaching either of the sides.There will usually be a manufacturer sticker showing which side faces down on the mattress support.Older babies will need slightly more space and thus the mattress support should be placed lower, depending on the age of your baby. For newborns attach the mattress support at the highest possible height.
If your crib is new you may need to attach some parts such as brackets to the mattress support before attaching it to the headboard and footboard.Slide it into the appropriate height and attach to the headboard and footboard using either screws, nuts and bolts or another type of fastener, depending on your particular crib. This is what the mattress will be resting on so it is very important that this be secure. The mattress support will be a board, a panel (looks like a ladder) or springs in a frame, depending on your particular crib. Attach the mattress support to the base of the crib.
