Hi Berney,
Hope you are well.
The Faux wood Is made from PVC material this is why they are popular for bedrooms, living rooms and bathrooms as these are waterproof and suitable for bathrooms etc.
As for the fixings this depends on the slat size so If you have 35mm slats the bracket boxes will be 50mm and the 50mm slats will have 65mm bracket boxes, please see the link below and If you look underneath the product, on the product page under Brackets you will see all this information I hope this has helped you.
Please do let me know If there is anything further I can do for you.