Product details:
Dimensions: 13x21.5x1Actual Size Dimensions: 13x21.5x1Changeout Interval: 3 Month Filter - Filter Media: 100% synthetic gradient media with antimicrobial properties - Filter Support Grid: 30 gauge galvanized expanded metal support for best performance and durability - Box Frame: Double-wall beverage board / Moisture resistant - Max Temperature: 180F - 225F Max Humidity: 100% R.H. Resistant