Adjustable post supports typically offer height adjustment of several centimetres via a threaded rod or slotted plate, and width-adjustable models accept a range of post sections such as 70–100 mm. The exact range depends on the model, so check the product details to confirm the minimum and maximum settings for your posts.

Yes, adjustable post supports are usually made from heavy-duty galvanised steel to carry structural loads and resist corrosion outdoors. The galvanised finish protects the threaded and moving parts against rust, keeping the adjustment mechanism working on decks, carports and pergolas exposed to weather.

You level a post with an adjustable base by bolting the base to concrete, seating the post, then turning the adjustment nut or moving the slotted plate until the upright is plumb and at the right height. Check with a spirit level on two faces, then tighten the locking nuts or bolts to fix the setting permanently.

An adjustable T support is a T-shaped bracket set into or bolted to concrete that carries a beam or post and allows height adjustment for precise levelling. It is used for pergola beams, carport uprights and decking where alignment matters. The GeZu Impex range covers height- and width-adjustable bolt-down bases and adjustable T supports, with each listing giving the adjustment range and post size.