Dear Ron,
This is a note to commend you for your company on the professionalism and workmanship related to our installation of windows and sliding door. Not only were you able to order us high quality materials and an attractive price, but the installer and dry wall specialists were among the most efficient and polite workers we have had the opportunity to observe.
It has been a pleasurable experience working with you and your employees. We will certainly recommend your company to friends and neighbors when the occasion arises.
Sincerely,