Examples:

Garage - Basement storage ideas

72 inch high shelves:
         Plastic                                             Steel
 
  Home Depot 150 lbs per shelf $40     Lowes 1,800 lbs per shelf - $144
  72 in. H x 36 in. W x 18 in. D                   72-in H x 60-in W x 18-in D
                    Top to bottom shelf height :
          14 ¾"                                     18"

Adjustable shelves

Height
17"-20" Large tote 
15.5"   Medium tote or storage bin
9       Small tote
6-7"    Medium storage box *
5"      Shoe box size storage box
3.5     Small storage box (Clip box)
12      Loose leaf binder
10"     Insect spray - lawn and garden products
15"     Plastic Ice chest
15.5    YETI tundra 35 qt & 45 qt ice chests
9, 9.5, 11, 11, 11, 12.5, 12.5, 14  Tool cases
9       Milwaukee drills, vacuum, ...
12      Staples folding shelves
14.75   Tall plastic shelves