rb25 Air Filter

I phoned around and cant find dimensions for an rb25 air filter. I need to get parts today and my car is down in Red Deer so I cant just rip it off and take it to mopac to get it sized out. Im pretty sure the cone filters K&N are pretty much the same but just wanted to know if anyone knows the sizes?
Thanks matt

You can use many different sizes of filters and air intake pipe diameter for better flow. You just have to make sure you have an adapter for your MAF in and out to bolt up to as well as slide the pipe and filter on and secure.

x2, couldn’t have said it better myself.