with reference to fig1 and 2 , an exemplary embodiment of a perforated ice bin insert 10 in accordance with aspects of the present invention is preferably made out of 304 stainless steel . however , other suitable materials may be used , e . g ., other suitable materials preferably are substantially rigid , durable , corrosion resistant and / or non - porous materials which meet or exceed health and safety code specifications for the food and beverage service / preparation industries . in a preferred embodiment , the insert 10 meets or exceeds the national sanitation foundation ( nsf ) guidelines and / or american national standards institute ( ansi ) standards for the food and beverage service / preparation industries . the insert 10 is preferably of one - piece construction , i . e ., a single sheet or plate of material formed with or otherwise made to have multiple perforations 12 and bends . the insert 10 may be dimensioned as desired to fit into various sizes of open ice bins . that is to say , the insert &# 39 ; s length , width and / or depth may vary so as to closely match interior dimensions of various manual service open ice bins , i . e ., ice bins of the type where a vendor exercises direct access to the ice therein for manual serving of the same . preferably , when installed in an ice bin , such as the manual service open ice bin unit 30 as shown in fig3 at least a portion of a periphery of the insert 10 is attached to and / or rests upon at least a portion of a periphery of the ice bin opening . alternately , the insert 10 may otherwise be supported in and / or attached to the ice bin 30 . for example , the insert 10 may rest on the bottom floor of the ice bin &# 39 ; s storage area , and include legs or other supports that raise the perforated section of the insert 10 above the same . referring again to fig1 and 2 , via the aforementioned bends or otherwise , the insert 10 is preferably formed so that it extends through the opening into an ice storage or holding cavity of the manual service open ice bin unit 30 . in the illustrated embodiment , the insert 10 possesses six primary sections defined by the aforementioned bends . the sections include : a front mounting section a , a front wall section b , first and second floor sections c and d , a rear wall section e , and a rear mounting section f . as shown , the front mounting section a includes an inverted j - channel 14 arranged to conform to and receive a front lip of the ice bin unit 30 when installed therein ( see fig3 ). the inverted j - channel 14 is designed to secure the front section a of the insert 10 to the front of the ice bin unit 30 . the inverted j - channel 14 is preferably sized to fit over the upper lip of the front of the ice bin unit 30 . accordingly , when installed , the insert 10 firmly rests within the ice storage cavity of the unit 30 with the front section a being supported on and / or by the front lip of the unit 30 . further , the j - channel 14 allows the front mounting section a to rest securely on the front lip of the unit 30 without having to be physically attached thereto , therefore , the insert 10 can be easily removed for servicing the ice bin unit 30 , completing repairs to the ice bin unit 30 , servicing a separate loose auxiliary cooling device 40 , clearing the unit &# 39 ; s drain ( not shown ), maintaining support connections 42 , etc . alternately , however , the front section a may be attached to the unit 30 with fasteners . the fasteners may be permanent or selectively removable and are preferably mechanical fasteners ( e . g ., screws , nuts and bolts , rivets , etc . ), but they may be otherwise ( e . g ., an adhesive , welds , etc .). while either may be used , it is to be appreciated that removable fasteners ( as compared to permanent ones ) provide for easier detachment of the insert 10 from the unit 30 as desired , e . g ., for cleaning , servicing , maintenance , etc . of the insert 10 , the unit 30 , the auxiliary cooling device 40 , support connections 42 or other components . in any event , it is to be appreciated that the front mounting section a may take various optional configurations for support and mounting purposes . the front wall section b is preferably a substantially vertical wall 16 which follows the contour of the front of the ice bin unit 30 . the vertical wall 16 has 90 - degree bends at either end with a bottom end connected to the first floor section c and an opposing top end connected to the front mounting section a . the front wall section b is preferably rigid and provides added strength to the insert 10 so that it does not sag when ice is piled onto the same . the front wall section b is preferably solid and without perforations and is designed to maximize potable ice storage capacity . similarly , the rear wall section e is also preferably a substantially vertical wall 18 which follows the contour of the rear of the ice bin unit 30 . the vertical wall 18 has bends at either end with a bottom end connected to the second floor section d and an opposing top end connected to the rear mounting section f . the rear wall section e is preferably rigid and provides added strength to the insert 10 so that it does not sag when ice is piled onto the same . the rear wall section e is preferably solid and without perforations and is designed to maximize potable ice storage capacity . together , the lengths of the vertical walls 16 and 18 determine how far into the ice storage cavity the insert 10 extends . preferably , these lengths are chosen so that the insert 10 extends into the cavity as much as possible while still leaving room below or otherwise outside the insert 10 for both : ( i ) the auxiliary cooling device 40 , and ( ii ) a layer of ice of a selected thickness around the cooling device 40 . the space or gap between the floor of the cavity and the bottom of the insert 10 is suitably in the range of approximately 3 to 5 inches , and preferably , it is approximately 4 inches . the rear mounting section f preferably includes a substantially horizontal surface 20 which is arranged to be attached to a rear lip of the ice bin unit 30 by removable fasteners , such as screws 22 ( as shown in fig3 ), extending through holes 24 ( best seen in fig1 ). in this manner , the insert 10 is securely attached to the unit 30 . alternately , to facilitate quick and easy removal of the insert 10 , the horizontal surface 20 may simply rest upon the rear lip of the ice bin unit 30 without being attached thereto . additionally , similar to the front mounting section a , other fasteners and / or fastening techniques including permanent or removable fasteners may be used , and the fasteners may be mechanical or otherwise . furthermore , the rear mounting section f optionally rests upon and / or is attached to a rear backsplash of the unit 30 in addition to or in lieu of resting / attaching to the rear lip of the unit 30 . optionally , rather than screws 22 extending through holes 24 to attach the insert 10 to the unit 30 , guide pins having maximum outside dimensions less than the dimension of the holes 24 are arranged on or otherwise extend from a rear lip of the unit 30 . when the insert 10 is installed in the unit 30 , the guide pins mate with and extend through the holes 24 . the holes 24 simply pass over the guide pins as the insert 10 is set into the unit 30 . the guide pins ensure proper positioning of the insert 10 in the unit 30 , and provide additional stabilization for the insert 10 by restricting its lateral movement in the plane horizontal to the rear mounting section f . attachment with screws 22 or other fasteners can similarly achieves these results . unlike the guide pins , attachment may also restrict vertical movement ( i . e ., lifting of the insert 10 out of the unit 30 ). compared to attachment , however , the guide pins permit relatively quicker and easier removal of the insert 10 from the unit 30 . the width w of the horizontal surface 20 is preferably chosen so that the vertical wall 18 is spaced apart from the rear wall of the ice bin unit 30 . preferably , enough room is maintained to run the supporting connections 42 between the vertical wall 18 and the rear wall of the ice bin unit 30 . that is to say , w is sized such that the space or gap between the rear wall of the ice bin unit 30 and the vertical wall 18 of the insert 10 is suitably in the range of approximately 1 to 3 inches , and preferably , it is approximately 2 inches . the supporting connections 42 extend to and from the auxiliary cooling device 40 sitting in the ice storage cavity of the unit 30 , e . g ., as shown in fig3 . the connections 42 include the lines that circulate the beverages to be cooled by the device 40 to and from the same . the horizontal surface 20 preferably has openings or cutouts 26 therein to allow for the connections 42 to pass through the rear mounting section f of the insert 10 , for example , as best seen in fig3 . optionally , folded down dog ears or tabs 28 ( as best seen in fig1 ) aid in guiding the supporting connections 42 through the openings or cutouts 26 . the bottom sections c and d preferably include an array of perforations 12 . in the exemplary embodiment shown , they are joined together at a 135 - degree angle and joined at opposing ends to sections b and e , respectively , at a 90 - degree angle and a 135 - degree angle . this arrangement of angles is designed to maximize potable ice storage capacity and provide easy access to the potable ice for human consumption . that is to say , the slant of bottom section d urges potable ice to the front of the ice bin unit 30 where it is more easily accessible . in any event , it is to be appreciated that other arrangements and different angular orientations of bottom sections are contemplated , and further , more or less bottom sections may be included . for example , there may be a singular bottom section joined at 90 - degree angles to both sections b and e , or the singular bottom section may be joined to sections b and e at selected angles so that it slopes down toward the front of the ice bin unit 30 . the perforations 12 are preferably arranged and / or sized to permit the migration of ice ( e . g ., cubes or other pieces , fragments or particles ) across the insert 10 , i . e ., from inside the insert 10 to outside the insert 10 . the perforations 12 preferably are large enough to allow a sufficient ice flow through the insert 10 while still being small enough to effectively obstruct manual access to or the retrieval of that ice which has passed through the insert 10 . in one suitable embodiment , the perforations 12 are approximately 1 . 75 by 1 . 75 inch square cutouts or apertures with rounded corners . however , other sizes and / or shapes for the perforations 12 are contemplated depending on the size and / or shape of the ice pieces being employed . in operation , the separate loose auxiliary cooling device 40 is first placed in the manual service open ice bin 30 . the insert 10 is then installed with the supporting connections 42 to the cooling device 40 being threaded through the cutouts 26 . next , ice is loaded into the unit 30 . ice placed in the unit 30 with the installed insert 10 is free to pass through the insert 10 to surround and cool the cooling device 40 , however , only the ice on the top or which otherwise does not pass through the insert may be readily accessed and manually retrieved for human consumption . accordingly , the same store of ice is segregated into one stash of manually accessible potable ice inside the insert 10 ( i . e ., the ice that does not pass through the insert 10 ) and another stash of inaccessible non - potable ice outside the insert 10 ( i . e ., the ice that does pass through the insert 10 and is potentially contaminated by the cooling device 40 and / or its supporting connections 42 ). in this manner , the insert 10 provides segregation of the auxiliary cooling device 40 and its support connections 42 from the potable ice storage area inside the insert 10 . with reference to fig4 and 5 , another exemplary embodiment of a perforated ice bin insert 10 has an additional section g including a wall interposed between sections b and c . as shown , the respective sections meet at 135 - degree angles , and the wall of section g has no perforations 12 ( although , it may optionally include them ). as compared to the 90 - degree angle shown in fig1 between sections b and c , the larger angles at which the respective sections b , c and g meet one another permit greater access to and / or easier cleaning at the bends . the invention has been described with reference to the preferred embodiment ( s ). obviously , modifications and alterations will occur to others upon reading and understanding the preceding detailed description . it is intended that the invention be construed as including all such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof .