Compression cartridge. 1.8 GPM (gallons per minute) maximum at 60 psi (pounds per square inch). Fits standard 8" installation. Polished chrome finish. Meets CUPC (Uniform Plumbing Code Canadian) certification, NSF (National Sanitation Foundation)/ANSI (American National Standards Institute) 371, and NSF/ANSI 61-9 standards. Manufactured to include no more than 0.25% weighted average lead content on wetted surfaces. Lifetime limited warranty. ADA compliant.