PA letter for rent increase

[Danette C.]

I recently read through posts of rent increase letters and how to approach them with the tenants.  I want to play it safe and give ample time for them to find a new place should they decide to not continue renting with us.  I figure 30-60 days is plenty as I could not find any "regulations/rules/statutes" for PA.  I am hoping some of you will share your sample letters as I have found some online, but want to make sure I am not missing important information as most letters had the following:

Effective date of rent increase with new amount

Will not affect current lease

Date tenant must reply by

Method of delivery to tenant as well as receiving back (ie certified mail, in person, email, etc)

***And anything else you would suggest.  Do I need to justify why the increase?  I will be tweaking new leases to include automatic percentage increase as I thought that was a great idea I saw in someone's post awhile back.

Thank you BP colleagues!

Danette