The Pittsburgh Corning Mortar Spacers for 6 in. x 8 in. x 4 in. Glass Blocks 50/CA are used with mortar installation of glass blocks. The spacers are designed to be hidden in the finished project.
- Designed for use with mortar installation of Arque series glass blocks (not included)
- Consistent joint spacing
- Helps provide a professional result and faster construction
- Made in USA
- Consistant joint spacing