American Louver Stratus 2x2 ft Plaque Insulated T-Bar diffusers. The Stratus all plastic diffusers won't corrode or fade and they're indistinguishable from metal when installed. Made of durable, engineered polymers and stainless steel screws, designed to resist rust, corrosion, yellowing or fading, and to resist mildew. The polymer itself is natively white and therefore without paint, negating the need to repaint this diffuser. The strong design maintains integrity and will not bend or scratch, despite being 50% lighter than its metal competitors.

• 23.75” x 23.75” for T-grid ceilings
• Durable plastic. Won't rust, corrode or fade
• Resist sweating which prevents moisture and condensation build-up
• Compatible with standard duct and damper sizes
• Flame resistant, meets UL94HB flame spread test
• White color.  R-6 insulation on back