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Rectangular aluminium base flange, grey mill finish, two mounting holes

Hollaender

Hollaender 47-9 Base Flange 2 in Pipe Size storage shed

SKU CH-GW93-7WFGT

Aluminium base flange for 2 in pipe, corrosion-resistant with 5 in length and 2 5/8 in inside diameter

  • Corrosion-resistant aluminum construction suits outdoor use
  • Rectangular base flange fits 2 in pipe size
  • 5 in overall length provides stable mounting platform
  • 2 5/8 in inside diameter matches 2 3/8 in pipe OD
  • Meets ASTM B179 535 material standard

Hollaender 47-9 Base Flange

The Hollaender 47-9 is a rectangular base flange made from corrosion-resistant aluminum with a mill finish. It is designed for 2-inch pipe size with an actual outer diameter of 2 3/8 inches and an inside diameter of 2 5/8 inches. This structural pipe fitting suits builders and maintenance crews assembling handrails, guardrails or modular frames.

Upgrading from worn or incompatible fittings

Replacement is worth it when existing flanges show corrosion, cracking or misalignment that compromises structural integrity. The ASTM B179 535 specification confirms material quality for load-bearing joints. The jump makes sense for projects requiring a flush, rectangular mounting surface on concrete, steel or timber substrates.

Build integration and clearance

The 5-inch overall length provides a stable footprint for bolting to flat surfaces while leaving the pipe bore open for through-runs or vertical posts. Aluminum construction reduces weight compared to steel alternatives and resists rust in outdoor environments. It frees up design flexibility for modular structures that may be reconfigured or expanded later.

How it compares

Measured against everything we stock in Storage Sheds & Accessories, at today’s prices. Recalculated every night.

Price $12.99
Typical for this category: the median of 882 items is $13.99.

Specifications

Product
Brand nameHOLLAENDER

Questions about this item

What are the exact dimensions of the mounting base and pipe bore for the Hollaender 47-9 flange?

The rectangular base measures 5 inches in overall length and the inside diameter is 2 5/8 inches to fit a 2 3/8 inch pipe outer diameter.

How is the flange secured to the pipe during installation, and which step is often missed?

The flange slides over the 2 3/8 inch pipe and is locked in place with set screws; the step often missed is tightening the screws evenly to prevent rotation.

What maintenance or replacement should be expected for the aluminum base flange over time?

The mill-finish aluminum resists corrosion per ASTM B179 535; inspect set screws periodically and replace the flange if the bore becomes worn or deformed.

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