The beautiful Sacred Heart stained glass window at St. Michael Chaldean Catholic Church, El Cajon, Ca., is an example of the impeccable work our team put into creating, fabricating, and installing this custom original art Window. To maintain the stained glass heritage our team installed a new 1400 Precision Flow® Vented Sub- Framing System.  We added additional vents in the frame due to the existing insulated glass that allows more heat to be transferred to the interior of the building in the winter.