Height-adjustable post base 80×80 mm, M20 thread – height 90–150 mm, galvanised
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Height-adjustable post base, electro-galvanised steel (silver zinc finish). 80 x 80 mm plate, 4 mm plate thickness, M20 thread, height adjustment range 90-150 mm. Weight 0.75 kg. For timber posts, suitable for outdoor and indoor use.
Product code: 002-504
Description
Height-adjustable post base 80×80 mm, M20 thread – height 90–150 mm, galvanised
The Height-adjustable post base 80 × 80 mm is a sturdy steel connector designed for fixing timber and structural posts, with smooth height adjustment. Thanks to the M20 thread, levelling the post takes just a moment, which speeds up installation work on site.

The bracket consists of two steel plates joined by a threaded rod with a hexagon nut. This design allows smooth adjustment of the distance between the plates, and therefore precise levelling of the post without the need to cut it to length. Mounting holes in both plates allow secure fixing to the substrate and to the post using bolts or screws.
The bracket is made of electro-galvanised steel (silver zinc finish), which protects the component against corrosion and allows it to be used both inside buildings and outdoors in sheltered conditions. The electro-galvanised finish provides an even, attractive protective coating over the entire surface, including the thread and nut. Its low weight makes it easy to transport and handle on site, and sale by the piece allows you to select the exact quantity needed for a specific project.
Benefits for the installer
- Smooth adjustment — compensates for uneven ground and slopes without cutting the post
- Quick installation — hexagon nut can be tightened with a standard open-ended spanner
- Versatile design — suits timber posts with a cross-section matched to the plate
- Corrosion protection — the galvanised coating protects the component for years
- Post isolated from the ground — raising the timber above moisture level extends its service life
- Easy replacement — a damaged post can be removed without disturbing the foundation
- Compact dimensions — small parcel size keeps delivery costs down
Applications
- Shelters, pergolas and canopies — mounting timber posts on foundation footings
- Fences — setting posts on a concrete strip or block with levelling
- Terraces and decks — adjustment compensates for differences in ground height
- Gazebos and carports — durable connection between the post and the foundation base
- Renovations and conversions — the post can be replaced without disturbing the foundation
The adjustable bracket is a versatile solution wherever a timber post must be isolated from damp ground and precisely levelled. The threaded adjustment eliminates the need to cut the post to length on site and allows the height to be corrected even after initial installation, significantly reducing the risk of installation errors.
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