Welcome to the Bunnings Workshop community @123. It's wonderful to have you join us, and many thanks for your question about aluminium framing.
We'd be happy to assist you with finding the correct product for your project. You'll then be able to place an online Click & Collect order for it.
Could you let our helpful members know the size and type of framing you've used that was incorrect and how much narrower you need it to be? We'll then be able to suggest some products that could suit your requirements.
I look forward to hearing further details and assisting you with your purchase.