Description

12x24x4 Premium Washable Stainless Steel Mesh Pre-Filter – Industrial-Grade Permanent Air Filtration

The 12x24x4 Washable Stainless Steel Mesh Pre-Filter represents the pinnacle of permanent pre-filtration technology, combining heavy-duty 304-grade stainless steel construction with exceptional particle capture performance. This industrial-strength pre-filter serves as the critical first stage in your multi-stage filtration system, protecting downstream high-efficiency filters while providing decades of reliable service. Engineered for deep-pleat 4-inch applications where superior dust-holding capacity is essential, this washable pre-filter serves residential, commercial, and industrial HVAC systems that demand robust pre-filtration without compromising airflow efficiency.

Unlike aluminum or synthetic electrostatic filters, stainless steel mesh pre-filter construction delivers unmatched durability and temperature resistance. The open-mesh design maintains excellent airflow even when partially loaded with dust, preventing the pressure drop spikes that can damage HVAC equipment. With actual size dimensions of approximately 11.5″ x 23.5″ x 3.75″ (nominal 12x24x4), this pre-filter fits standard HVAC filter housing tracks designed for 4-inch depth filters. Whether you’re upgrading a residential system’s pre-filtration stage, maintaining commercial air handlers, or protecting industrial equipment with effective pre-filters, this permanent stainless steel pre-filter provides professional-grade performance while extending the life of your downstream filters.

Made in the USA with premium materials and precision manufacturing, this washable mesh pre-filter features welded frame construction, multiple layers of stainless steel mesh for enhanced particle capture, and a design proven in demanding pre-filtration applications across the United States. With free shipping available on qualifying orders, this permanent pre-filter investment protects your expensive downstream filters while delivering superior air quality and HVAC system protection. The 12x24x4 configuration is commonly used in larger residential systems, commercial buildings, and facilities requiring high-volume air handling with robust pre-filtration.

Technical Specifications & Pre-Filter Construction Details

Understanding the engineering and materials behind the 12x24x4 stainless steel mesh pre-filter helps you appreciate why this industrial-grade solution is essential for protecting your downstream filters and HVAC system components.

Pre-Filter Dimensions: 12x24x4 (Actual Size: 11.50 x 23.38 x 3.63 Inches)

Like all HVAC pre-filters, this unit uses industry-standard nominal sizing. The nominal size of 12x24x4 represents the advertised dimensions, while the actual size measures approximately 11.5″ x 23.5″ x 3.75″. This slight undersizing is intentional – it allows the pre-filter to slide smoothly into housing tracks without binding. When measuring your filter housing opening, you should find dimensions close to the nominal 12x24x4 size. Always order pre-filters using the nominal size printed on your existing filter, not by measuring the physical filter dimensions.

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