Building firm Considerate Contractors piled the planks onto this year's blaze from its nearby construction site.
And there wasn't a problem if the fire needed extinguished pretty quickly as the same firm are currently constructing the filter plant to supply the town with some of the cleanest water in Scotland.
Up to two tonnes of timber was delivered to the bonfire site, just behind the town's health centre.
Considerate Construction began work back in June with completion of the new filter plant expected next May.
Site manager William Jenkins told the Peeblesshire News: "It takes water from the bore hole by the Tweed and puts it through a series of filtration methods to purify and clean the water.
"It'll be cleaner than your average water around Scotland because it's the new technology that's being put into use.
"Over and above the bonfire donation we've been involved with doing presentations to the kids at St Ronan's, and we've also donated £250 to the school."
The bonfire was staged by the Innerleithen Walkerburn & Traquair Rotary Club on Monday evening. And there will be an accompanying fireworks display - which promises to be the biggest yet.
Profits from the night will go to local good causes.