Krieger Specialty Products

Krieger has been a manufacturer of custom doors and window products for over 70 years. We offer industry leading design, testing, manufacture and installation of custom doors and windows that fulfill various acoustical, stainless steel, bullet, blast, security, thermal and radio frequency needs.

Krieger is nationally recognized as one of three premier manufacturers of acoustical doors & stainless steel doors and windows. In 1988, we were the first manufacturer of custom doors to break the STC 51 barrier with a 1-3/4" thick door without a raised sill; and in 1992 we achieved an STC rating of 47 on a 1-3/4" thick wood door, the highest at the time