These diffusers are a combination of a louvered pattern diffuser with a lattice face plate for minimum security protection.… The diffusers are available with a choice of 1, 2, 3 or 4-way throw patterns. Use these diffusers in applications where constant supervision occurs. read more Models SG-6500 - Steel SG-6500-O - Steel • with Opposed Blade Damper SG-6200 - Aluminum SG-6200-O - Aluminum • with Opposed Blade Damper Submittals Individual Submittals Model SG-6200 • Minimum Security Diffuser • Aluminum Louvered Core • 1-4 way Throw Pattern Model SG-6500 • Minimum Security Diffuser • Steel Louvered Core • 1-4 way Throw Pattern Performance Data SG-6500 and SG-6200 Catalog Catalog Pages