SCW-3639 forms the bottom side of the bed joint of mortar in our WEEP System, as part of a technologically advanced design for creating division between the masonry and structural back-up walls. SCW-3639 consists of 2.25″ (57 mm) wide weep legs at 9.5″ (241 mm) on center; a continuous belt 1″ (25.4 mm) wide; and a total wide of 1′ (152 mm). It creates 4 weep holes every 9.5″ at the lowest point in the wall to ensure durability, rigidity, and longevity.