Galvanized Strongback for 22" Single-Bolt Flush Manhole (Model #SB540-SB22)

Galvanized Strongback for 22" Single-Bolt Flush Manhole (Model #SB540-SB22)

The Model #SB540-SB22 is an extended, heavy-duty structural galvanized steel strongback replacement bar engineered specifically for traditional 22" single-bolt flush manholes. Designed to slide completely beneath the deck plating cutout, this rugged clamping beam features an extra-thick center threaded hub built to handle the massive linear tension required to securely compress large-span tank hatches and watertight boundaries.

Key Features

  • Hot-Dip Galvanized Corrosion Protection: Thick zinc-coated finish provides ultimate defense against abrasive bilge water, chemical tanks, and heavy saltwater scaling.
  • Extended High-Span Structural Geometry: Engineered with a longer, reinforced cross-section to resist vertical deflection and bending across 22" openings under intense hydrostatic loads.
  • Precision Machined Central Thread: Clean-cut internal threads allow for smooth, effortless engagement and rapid tightening of the single central lockdown bolt.