18x20x2 Air Filter for HVAC.  
Actual Size: 17-1/2 x 19-1/2 x 1-3/4.  
Filter Rating: MERV 8 | FPR 5| MPR 600.  

MERV 8 Specifications:
• Protects from Lint, Dust, Pet Dander, Pollen, Dust Mites, & Mold
• Available several standard face sizes
• Independently tested and verified for quality control
• 100% synthetic, proprietary media resists moisture and damage
• Extremely low pressure drop and high dust holding capacity
• Heavy duty, moisture resistant beverage board frame
• Two-piece frame provides rigidity with double-wall thickness around outer edge
• Rust-resistant, expanded metal support grid made of galvanized steel
• 100% water repellent, high-strength adhesive coats entire interior of frame
• Pleat consistency maximizes performance
• Engineered and designed for high strength and rigidity
• Recommended to replace at least every 90 days
• Made in the USA