the present invention now will be described hereinafter with reference to the accompanying drawings and examples , in which embodiments of the invention are shown . this invention may , however , be embodied in many different forms and should not be construed as limited to the embodiments set forth herein . rather , these embodiments are provided so that this disclosure will be thorough and complete , and will fully convey the scope of the invention to those skilled in the art . like numbers refer to like elements throughout . in the figures , the thickness of certain lines , layers , components , elements or features may be exaggerated for clarity . broken lines illustrate optional features or operations unless specified otherwise . the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention . as used herein , the singular forms “ a ”, “ an ” and “ the ” are intended to include the plural forms as well , unless the context clearly indicates otherwise . it will be further understood that the terms “ comprises ” and / or “ comprising ,” when used in this specification , specify the presence of stated features , integers , steps , operations , elements , and / or components , but do not preclude the presence or addition of one or more other features , integers , steps , operations , elements , components , and / or groups thereof . as used herein , the term “ and / or ” includes any and all combinations of one or more of the associated listed items . as used herein , phrases such as “ between x and y ” and “ between about x and y ” should be interpreted to include x and y . as used herein , phrases such as “ between about x and y ” mean “ between about x and about y .” as used herein , phrases such as “ from about x to y ” mean “ from about x to about y .” unless otherwise defined , all terms ( including technical and scientific terms ) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs . it will be further understood that terms , such as those defined in commonly used dictionaries , should be interpreted as having a meaning that is consistent with their meaning in the context of the specification and relevant art and should not be interpreted in an idealized or overly formal sense unless expressly so defined herein . well - known functions or constructions may not be described in detail for brevity and / or clarity . it will be understood that when an element is referred to as being “ on ”, “ attached ” to , “ connected ” to , “ coupled ” with , “ contacting &# 39 ;” etc ., another element , it can be directly on , attached to , connected to , coupled with or contacting the other element or intervening elements may also be present . in contrast , when an element is referred to as being , for example , “ directly on ”, directly attached ” to , “ directly connected ” to , “ directly coupled ” with or “ directly contacting ” another element , there are no intervening elements present . it will also be appreciated by those of skill in the art that references to a structure or feature that is disposed “ adjacent ” another feature may have portions that overlap or underlie the adjacent feature . spatially relative terms , such as ‘ under ”, “ below ”, “ lower ”, “ over ”, “ upper ” and the like , may be used herein for ease of description to describe one element or feature &# 39 ; s relationship to another element ( s ) or feature ( s ) as illustrated in the figures . it will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures . for example , if the device in the figures is inverted , elements described as “ under ” or “ beneath ” other elements or features would then be oriented “ over ” the other elements or features . thus , the exemplary term “ under ” can encompass both an orientation of “ over ” and “ under ”. the device may be otherwise oriented ( rotated 90 degrees or at other orientations ) and the spatially relative descriptors used herein interpreted accordingly . similarly , the terms “ upwardly ”, “ downwardly ”, “ vertical ”, “ horizontal ” and the like are used herein for the purpose of explanation only unless specifically indicated otherwise . it will be understood that , although the terms “ first ”, “ second ”, etc . may be used herein to describe various elements , components , regions , layers and / or sections , these elements , components , regions , layers and / or sections should not be limited by these terms . these terms are only used to distinguish one element , component , region , layer or section from another region , layer or section . thus , a “ first ” element , component , region , layer or section discussed below could also be termed a “ second ” element , component , region , layer or section without departing from the teachings of the present invention . the sequence of operations ( or steps ) is not limited to the order presented in the claims or figures unless specifically indicated otherwise . referring to fig1 - 3 , a container 10 is shown therein . the container 10 includes a receptacle 20 having a front wall 21 , opposing sidewalls 22 that are perpendicular to the front wall 21 , a rear wall 23 that opposes the front wall 21 , and a floor 24 . a cover 25 is attached via a hinge to the rear wall 23 . the container 10 also includes four bolsters 30 on the underside of the floor 24 . the bolsters 30 each define at least two entry windows 50 , 60 . as shown in fig3 - 5 , two bolsters 30 may be formed as a single , unitary dual bolster assembly 31 . as shown in fig1 - 7 , each of the bolsters 30 includes a lower panel 32 with projections 34 that extend downwardly from the lower panel 32 to form the entry window 50 . a pair of walls 36 extend upwardly from the lower panel 32 to the floor 24 and form the other entry window 60 . in addition , the lower panel 32 includes creases 38 a , 38 b . the projections 34 include apertures 40 . the apertures 40 are configured to receive casters 48 therein as shown in fig2 . as shown in fig3 and 4 , an upper panel 42 connects one or more of the bolsters 30 . as shown in fig8 - 9 , the bolsters 30 provide entry windows 50 , 60 that are substantially perpendicular to one another such that the container 10 may be lifted by a forklift 70 from the sides or from the front or back of the container 10 . the entry windows 50 , 60 form openings that are accessible from a side of the container 10 ( i . e ., via window 50 ) and from a front of the container 60 ( i . e ., via window 60 ). as illustrated , prongs 72 of the forklift 70 may be inserted in respective entry windows 60 to lift the container 10 from the front ( fig8 ) or the prongs 72 of the forklift 70 may be inserted in respective entry windows 50 to lift the container from the side ( fig9 ). those skilled in this art will recognize that the container 10 may take other configurations . for example , various sizes , shapes and configurations can be used to form the bolsters 30 and entry windows 50 , 60 . in particular , as shown in fig1 , a container 100 includes a bolster 130 having entry windows 150 , 160 . as illustrated in fig1 , the bolster 130 includes walls 136 that extend downwardly from the container 100 and a lower panel 134 . the walls 136 have an opening that forms the entry window 150 . the walls 136 and the panel 134 together form the entry window 160 . in this configuration , the entry windows 150 , 160 are accessible from a side and a front of the container . as illustrated in fig1 , a container 200 includes bolsters 230 extending along a side 222 of a receptacle 220 . the receptacle 220 has a front wall 221 , opposing sidewalls 222 that are perpendicular to the front wall 221 , a rear wall 223 that opposes the front wall 221 , a floor 24 , and a cover 235 that is attached via a hinge to the rear wall 223 . the bolsters 230 define an entry window 250 adjacent the front wall 221 . the bolsters 230 also include a notch 232 adjacent the side walls 222 , which defines another entry window 260 . in this configuration , the prongs from a forklift may be inserted from the front of the container 200 via the entry window 250 or from the side of the container 200 via the entry window 260 . as shown in fig4 - 7 , the bolster 30 is formed as a unitary member . in particular , the dual bolster assembly 31 may be formed from a unitary member such as a single sheet of metal and connected by the upper panel 42 . the sheet of metal may have a thickness between 0 . 0299 and 0 . 5 inches . the bolsters 30 may be attached to the floor 24 by the panel 42 and the upper portion of the walls 36 , for example , by welding in some embodiments , the upper panel 42 is omitted , and the bolsters 30 are formed separately from one another . the bolsters 30 include creases 38 a , 38 b , which may increase the strength and / or rigidity of the bolster 30 . the lower crease 38 b may also guide the prong 72 of the forklift 70 into the entry windows 60 as shown in fig8 . in some embodiments , the creases 38 a , 38 b are omitted . as shown in fig3 and 6 , the bolster walls 36 extend at an angle with respect to the upper panel 42 , the lower panel 32 and the container floor 24 such that the bolster walls 36 are not perpendicular to the container floor 24 . as illustrated , the angle at which the walls 36 extend with respect to the container floor 24 and the panels 32 , 42 may strengthen the structure of the bolsters 341 for bearing weight from the container 10 ; however , in some embodiments , the bolster walls 36 may be perpendicular to the container floor 24 and the panels 32 , 42 . as illustrated in fig1 - 7 , the projections 34 of the bolsters 30 include apertures 40 , which may be used to hold casters 48 therein as shown in fig2 . pairs of the projections 34 on the bolsters 30 define the entry window 50 such that , when the container 10 is positioned on a flat surface , such as the ground or floor , the entry window 50 provides sufficient space for the prongs 72 of the forklift 70 so that the forklift 70 can lift the container 10 from the front ( fig2 and fig8 ). in some embodiments , the projections extend at least 0 . 25 inches from the lower panel 32 . however , the apertures 40 and casters 48 may be omitted , and the bolsters 30 may rest directly on the ground or floor . if the casters 48 are omitted , the projections 34 may extend a greater distance from the lower panel 32 to provide sufficient space for the prongs 72 of the forklift 70 , such as at least 0 . 25 inches from the lower panel 32 . as illustrated in fig2 , two casters 48 are affixed to each bolster 30 on respective projections 34 by screws 48 a . the illustrated two - caster configuration may provide stability and support to the container 10 ; however , one caster 48 per bolster 30 may be used , or more than two casters 48 may be used on a single bolster 30 . the casters can have a height of between three and sixteen inches . the foregoing is illustrative of the present invention and is not to be construed as limiting thereof . although a few exemplary embodiments of this invention have been described , those skilled in the art will readily appreciate that many modifications are possible in the exemplary embodiments without materially departing from the novel teachings and advantages of this invention . accordingly , all such modifications are intended to be included within the scope of this invention as defined in the claims . therefore , it is to be understood that the foregoing is illustrative of the present invention and is not to be construed as limited to the specific embodiments disclosed , and that modifications to the disclosed embodiments , as well as other embodiments , are intended to be included within the scope of the appended claims . the invention is defined by the following claims , with equivalents of the claims to be included therein .