as 3 u00bd inches it is understood that the width of the jamb system can be altered either via the locking mechanism alone or in combination with the locking mechanism and length of each support member component to accommodate any size of wall thickness in an alternate embodiment the two components 10 a 10 b are not directly affixed together but held in place by the attachment of the wing members to the drywall frame system see below the support member may have a series of ribs 25 along the width thereof in order to provide mechanical stability such an embodiment may be used when the jamb system is used to support a heavy and or tall door the support member may have a reveal 30 of any suitable shape for example the reveal may be right angled curved or the like in fig1 a right angled reveal 30 is shown while in fig9 a curved reveal 80 is shown the support member can be made of polyvinyl chloride acrylonitrile butadiene styrene abs fibreglass steel aluminum or other similar material in addition the support member 10 includes a wing member 15 at each width extremity thereof the wing member 15 is used to attach the jamb system 5 to drywall each wing.