SWBS-8, SWBS-12, DWBS-8, DWBS-12, TWBS-8, TWBS-12, JWB-4, SFWB are all models for single, double, triple, junior and soffit standard wall boxes. Also an extruded aluminum grille is available for single and double wall boxes. TEST STANDARD: Cyclic Static Test ASTM E547-00, Tested @ 200 Pa.
