referring to fig1 a cabinet 10 comprises a housing 11 within which is supported a shelf 12 and a shelf organizer 13 . the housing 11 is formed by securing a back panel 14 to a pair of side panels 15 , a top panel 16 , and a bottom panel 17 . the shelf 12 and shelf organizer 13 are supported in the cabinet 10 by slots 9 in the side panels 15 . the top panel 16 is additionally secured to the upper ends of the side panels 15 , and the bottom panel 17 is additionally secured to the lower ends of the side panels 15 . it will be understood that cabinets of other configurations and construction can be used with the shelf organizer of this invention . shelf organizer 13 comprises a generally planar and rectangular shelf 18 having a plurality of circular sleeves 19 affixed to an underside 20 of the shelf 18 in a presently preferred embodiment . shelf 18 has an upper surface 21 on which items 22 may be supported . referring to fig2 an alternate embodiment of a shelf organizer 23 is shown . the shelf organizer 23 comprises a shelf 28 having a plurality of quadrangular sleeves 29 affixed to an underside 30 thereof . shelf 28 has an upper surface 31 on which items may be supported . as shown in fig1 shelf organizer 13 preferably has a plurality of circular sleeves 19 not all having the same diameter . shelf organizer 23 preferably has a plurality of quadrangular sleeves 29 not all having the same cross - sectional size and shape as shown in fig2 . the cabinet 10 typically has a door or doors ( not shown ) on the front thereof . typically , the housing 11 is arranged with the side panels 15 parallel to each other , and the top and bottom panels 16 , 17 parallel to each other and perpendicular to the side panels 15 . the housing 11 typically has the back panel 14 secured to the side , top , and bottom panels 15 , 16 and 17 such that the back panel 14 is orthogonal to the side , top , and bottom panels 15 , 16 and 17 . various means of securing the panels to each other may be used . the panels may be separate pieces that are secured to one another using well - known techniques , such as fasteners , adhesives , welding , brazing , or soldering . alternatively , the panels may be secured to one another by being made integral , such as by molding , casting , bending , stamping , or other well - known techniques . a combination of joined and integral panels may also be used . the side panels 15 of the cabinet 10 are commonly spaced 13 . 25 inches apart ; therefore , the shelf 28 or 18 is preferably about 13 . 25 inches in length to fit between the side panels 15 of the cabinet in one embodiment . however , residential and commercial cabinets 10 are made in a variety of other sizes and may have the side panels 15 spaced 13 . 5 inches or more apart . as shown in fig2 the shelf organizer 23 of a presently preferred embodiment includes a shelf extension 32 on one end of the shelf 28 . it will be appreciated that although the shelf extension 32 is shown and described with reference to one end of the shelf 28 , it can be readily adapted for both ends or another edge or dimension of the shelf organizer 23 . the shelf extension 32 is mounted to the shelf 28 by brackets 33 which enable the extensions 32 to telescope into and away from the shelf 28 as required to fit within the cabinet 10 and provide the greatest amount of possible shelf space . the shelves 12 , 28 may be supported within the housing in various ways . they may be supported by means attached to or incorporated within the side panels 15 , such as the slots 9 . alternatively , the shelves 12 , 28 may be supported on tabs , pins , or brackets that are affixed to the side panels 15 or other known means . the shelves 12 , 28 and cabinet housing 11 may be constructed of a variety of materials , including but not limited to metal , wood , pressed particle board , glass , plastic ( including vinyl plastic ), or ceramic . likewise , the sleeves 19 , 29 may be made of a variety of materials , including but not limited to wood , metal , plastic ( including vinyl plastic ), glass or ceramic . the sleeves 19 , 29 may be affixed to the shelf 18 or 28 using various techniques . for example , the sleeve 19 , 29 may be a separate piece that is preferably joined to the shelf 12 or 28 using well - known means , such as adhesives , fasteners , welding , brazing , or soldering . alternatively , the sleeve 19 , 29 may be affixed to the shelf 12 or 28 by being made integral therewith , such as by molding or casting . the cabinet 10 incorporating this invention may have only one shelf 18 , 28 having one or more sleeves 19 , 29 affixed to its underside , or it may have more than one shelf 18 , 28 each having one or more sleeves 19 , 29 affixed to its underside . one or more sleeves 19 , 29 may be affixed to an underside of the top panel 16 . in addition , the cabinet 10 may have one or more shelves 12 with no sleeves affixed . the cabinet 10 may have additional features , such as doors or dividers , without departing from the scope of this invention . from the above disclosure of the general principles of the present invention and the preceding detailed description of a preferred embodiment , those skilled in the art will readily comprehend that the invention is susceptible to various modifications . therefore , the invention is limited only by the scope of the following claims and equivalents thereof .
a shelf organizer includes a generally planar shelf with sleeves affixed to an underside of the shelf . the sleeves are configured for selected items to be inserted therein for storage while other items are placed atop the shelf for storage as is well known . the shelf organizer is used within a cabinet such as a medicine cabinet , or in conjunction with any standard shelf and in one embodiment includes a shelf extension to accommodate differently sized cabinets .