Openchannelflow manufactures fiberglass H Flumes in the following sizes:

• HS
  • 0.4-foot
  • 0.6-foot
  • 0.8-foot
  • 1.0-foot
• H
  • 0.5-foot
  • 0.75-foot
  • 1.0-foot
  • 1.5-foot
  • 2.0-foot
  • 2.5-foot
  • 3.0-foot
  • 4.5-foot
• HL
  • 3.0-foot
  • 4.0-foot

In addition to fiberglass, many of the sizes above are also available in aluminum, galvanized steel, and stainless steel.