Mara block
Means for erecting a wall of wall blocks, preferably of glass
Method and apparatus for creating design insulated glass
Method and apparatus for erecting a glass block wall
Modular frame assembly for mounting glass blocks
Mortar collecting device for use in masonry wall construction
Mortarless glass block assembly
Multi-glazed window
Multi-light glass block panel assembly and method
Multiply glazed window and door assemblies with screened breathi
Muntin