Image Item No. Description By  Mx1566pb01  Modulex, Window 1 x 6 x 6 with White Border Pattern Catalog: Parts: Modulex, Window 2  Mx1592  Modulex, Window Frame Section, Bottom 1 x 12 Catalog: Parts: Modulex, Window 2  Mx1593B  Modulex, Window Frame Section, Double Upright (9 stud length) Catalog: Parts: Modulex, Window 1  Mx1593A  Modulex, Window Frame Section, Single Upright (9 stud length) Catalog: Parts: Modulex, Window 2