Hi , Can you please help me. I would like to know if the perfect fit wooden blinds in Auburn and hazel can be fitted without any drilling involved? Thank you

Yes, no drilling Is involved when you are fitting a perfect fit up, please see the measuring guides below:

https://www.blindsbypost.co.uk/measuring-guides#perfect-fit-blinds

Please let me know if there is anything further I can do for you In the meantime as I am happy to help you.