Summary: in a 2 width to join insulated glass units in double hung and fixed windows. These extruded muntins provide greater strength and durability while adding an esthetic appeal to the window. Recent production involved Model 7500 Hartford Green Fixed Windows with an overall dimension of 100 x 81 for the Cortland Glass Co. and Model 7000 Black Double Hung Windows joined with
Image Dimensions: 175 x 131
Image originally found here.