Duct Support Block Base Material Rubber Base Size 20.75 in L x 31.5 in W For Maximum Outside Diameter 31 1/2 in For Maximum Pipe Size 24 in For Minimum Pipe Size Not Applicable Load Capacity 1 000 lb Maximum Height Adjustment 26 3/4 in Minimum Height Adjustment 10 9/16 in Mount Type Placed On Surface May Be Glued or Anchored for Additional Support Overall Height 10.56 in Overall Length 20.75 in Pipe Support Type Elevated Block System Roller Diameter Not Applicable