HBS Standard Base

Rooftop Support H-Block Standard Base Only

  • H-Block Standard base only
  • The H-Block Standard Base series is suitable for installation on most types of roofing material or other flat surfaces.
  • Can be used as a curb (sleeper) replacement.
  • Screw fasteners can be used to attach one or two hole pipe straps or a piece of strut (not included).
  • Material: 100% recycled rubber tires
  • UV resistant
  • Dampens vibrations
  • High visibility safety corners coated with ANSI orange #2535.1-1998
  • Resistant to freeze and thaw (ASTM D1171 modified)
  • ASTM D575 medthod B-modified compression/deflection testing

Submittal Sheets_HBS-Base Series Request Quote


Overall HeightWidthBase LengthWeight (lbs)Uniform Load Capacity (lbs)*Safety Factor
4" (101 mm)5" (127 mm)10-7/8" (276 mm)4.802,5002.0

* This load is only for the capacity of the components in this assembly. Consult roofing manufacturer or engineer for roof load capacity.


  • LEEDS certifiable
  • Meets the Buy American Act
  • American Reinvestment Recovery Act (A.R.R.A.)