Tilting and sliding system for a shelf having side support arms receivable into apertures in vertical posts

A shelving system, comprising:

• (a) an assembly comprising:
• two front vertical posts that are each hollow and have:
• a front wall, a rear wall, side walls between the front wall and the rear wall, and a series of vertically spaced apart apertures passing therethrough, wherein each aperture comprises a pair of holes with a first hole in the front wall of the front vertical post and a second hole in the rear wall of the front vertical post;
• and
• two rear vertical posts that are each hollow and have:
• a front wall, a rear wall, side walls between the front wall and the rear wall, and a series of vertically spaced apart apertures passing therethrough, wherein each aperture comprises a pair of holes with a first hole in the front wall of the rear vertical post and a second hole in the rear wall of the rear vertical post;
• and
• (b) a shelf comprising:
• a main body,
• a pair of front side support arms extending from opposite sides of a front portion of the main body, wherein the front side support arms extend fully through corresponding vertically spaced apart apertures from the series of vertically spaced apart apertures in the front vertical posts, and
• a pair of rear side support arms extending from opposite sides of a rear portion of the main body, wherein the rear side support arms extend fully through corresponding vertically spaced apart apertures from the series of vertically spaced apart apertures in the rear vertical posts,
• wherein one of the pairs of side support arms directly engage and are configured to lock against:
• a top edge of the first or second holes, and
• a bottom edge of the other of the first or second holes,
• to support the shelf in an inclined position;
• wherein the rear side support arms have a series of bottom notches or protrusions thereon, and wherein the notches are cactus-shaped or saw-tooth shaped.

A shelving system, comprising:

• (a) an assembly comprising:
• two front vertical posts having a series of vertically spaced apart apertures passing therethrough, and
• two rear vertical posts having a series of vertically spaced apart apertures passing therethrough;
• and
• (b) a shelf comprising:
• a main body,
• a pair of front side support arms extending from opposite sides of a front portion of the main body, wherein the front side support arms extend fully through corresponding vertically spaced apart apertures from the series of vertically spaced apart apertures in the front vertical posts, and
• a pair of rear side support arms extending from opposite sides of a rear portion of the main body, wherein the rear side support arms extend fully through corresponding vertically spaced apart apertures from the series of vertically spaced apart apertures in the rear vertical posts,
• wherein the rear side support arms have a series of bottom notches or protrusions thereon,
• wherein the bottom notches lock onto the vertically spaced apart apertures in the rear vertical posts, and
• wherein each of the vertically spaced apart apertures in the rear vertical posts include a front wall aperture and a back wall aperture, and wherein the front wall aperture is positioned lower than the back wall aperture.