The Size 2 Acrow Prop (2.0m–3.4m) RSJ Support Prop is a heavy-duty adjustable steel support used for temporary structural support during construction, renovation, and steel beam installation work. It is commonly paired with Strongboy or masonry support attachments when fitting RSJs (Rolled Steel Joists), replacing lintels, or removing load-bearing walls. The Size 2 prop is suitable for medium-height applications in domestic and commercial projects.

Prop SizeSize 2
Closed Height2.0 m
Extended Height3.4 m
WeightApprox. 19–21 kg
MaterialHeavy-duty steel


Base Plate Size150 × 150 × 6 mm
Inner Tube Diameter48.3 mm
Inner Tube Thickness3.2 mm
Outer Tube Diameter60.3 mm
Outer Tube Thickness3.6 mm
Adjustment TypeTelescopic with pin and threaded collar
Standard ComplianceBS4074
Safe Working LoadUp to approx. 35 kN closed / 13 kN extended

RSJ / Strongboy Support Details

SpecificationDetails
Compatible AttachmentStrongboy / Prop Support
Typical Safe Working LoadApprox. 340 kg per support
Main UseSupporting masonry above RSJ openings
Installation TypeTemporary structural support

Main Features

  • Adjustable telescopic steel support prop
  • Suitable for RSJ and lintel installation work
  • Compatible with Strongboy masonry supports
  • Heavy-duty welded top and base plates
  • Quick adjustment with captive pin and threaded collar
  • Powder-coated or painted for corrosion resistance
  • Reusable for construction and structural projects
  • Stable support for walls, ceilings, and beams

Common Applications

  • Installing RSJ steel beams
  • Supporting load-bearing walls
  • Structural alterations and knock-throughs
  • Lintel replacement
  • Ceiling and floor propping
  • Loft and basement conversions
  • Temporary support during demolition or rebuilding works

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Nationwide delivery available at extra cost

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