What is an ANSI (American National Standards Institute) rating on an Kwikset deadbolt?
The American National Standards Institute sets three levels of security for deadbolts, Grades 1, 2, and 3. Grade 1 standards are the highest possible resistance to several types of forced-entry tests, including prying and kicking.
An ANSI Grade 1 rating ensures that you have purchased the highest-rated security deadbolt available which is Kwikset Ultramax.
Kwikset Maximum Security is Grade 2
Kwikset Security is Grade 3.