Yes. It's called 20 year guaranteed level term life insurance protection.
It means, you pay the same premium each year for your life insurance policy, and the premiums never increase or decrease during the policy "term" (duration).
In addition, the amount of life insurance provided by your policy stays level.
Guaranteed level premiums help you be able to budget, knowing your cost of life insurance will remain the same for 20 years.
There are level term life insurance plans with guaranteed level premiums for a term of 10, 15, 20 or 30 years.
Learn more about 20 year level term guaranteed life insurance.