The ETS 24x24x4.5 is a pleated air filter for HVAC systems engineered to capture airborne particles and improve indoor air quality. The filter employs electrostatically charged synthetic pleated media with a durable frame and wire backing to remove dust, pollen, pet dander, mold spores, lint, smoke, and smog across residential and commercial applications. Available in multiple MERV ratings—MERV 8, MERV 11, and MERV 13—the filter delivers filtration efficiency from 90% to 95% depending on rating, with MERV 13 capturing finer contaminants including bacteria and tobacco smoke.
Technical Specifications
• Nominal Size: 24×24×4 inches
• Actual Size: 23.38″ × 23.38″ × 3.63″ (varies slightly by manufacturer)
• Filter Media: Electrostatically charged synthetic polypropylene pleated media with 8 pleats per foot
• Frame Material: Industrial-grade beverage board or aluminum/metal construction rated to 200°F
• Support Structure: Dual wire backings or expanded galvanized mesh for pleat integrity
• Initial Resistance: Approximately 0.21 inches water gauge at 300 fpm (MERV 8)
• Weight: Approximately 240 ounces
• Operating Temperature: Up to 200°F
– Key Features
• MERV 8: Captures ~90% of airborne particles (equivalent to MPR 600 & FPR 5)
• MERV 11: Captures ~95% of dust particles, recommended for homes with pets or allergies (equivalent to MPR 1200 & FPR 7)
• MERV 13: Efficiently captures bacteria, tobacco smoke, sneeze-released pollutants, and standard allergens
• Extended Service Life: 6 to 9 months typical lifespan for 4-inch depth
• High Surface Area: Pleated construction maximizes filtration capacity and dirt-holding ability
– Typical Applications
Residential furnaces, air conditioners, and heat pump systems. Commercial HVAC installations requiring 4-inch filter cabinets.
– Compatibility & Integration
Designed for 4-inch filter cabinet systems. Compatible with most residential and commercial furnaces, air conditioners, and heat pumps.












