15" x 20" x 1" Disposable Synthetic Warm Air Panel Filter, Merv 4

Product Overview

The Purolator® P312 Warm Air Filter (Model P312-15X20X1) is a disposable synthetic panel air filter engineered for use in HVAC systems serving residential, commercial, and light industrial environments. Constructed with bonded polyester fiber media and a one-piece heat-sealed Monobond™ pinch frame, the filter provides reliable particulate retention, low airflow resistance, and consistent mechanical performance under a range of operating conditions.

Technical Specifications

• Manufacturer: Purolator®
• Model: P312-15X20X1
• Nominal Size: 15 in. x 20 in. x 1 in.
• Filter Type: Disposable Synthetic Panel Air Filter
• Media Composition: Non-woven polyester fibers bonded in a progressive-density configuration
• Frame Construction: One-piece Monobond™ pinch frame produced from post-consumer recycled materials
• Seal Method: Continuous thermal bond joining media to the frame perimeter to prevent air bypass
• Binder Type: High tensile strength binder providing rigidity and long-term seal integrity
• Filtration Characteristics: Interlocking fiber matrix forming multiple lint and dust retention zones
• Dust Holding Capacity: High, with uniform depth loading and minimal surface restriction
• Airflow Resistance: Low static pressure design maintaining efficient HVAC system performance
• Operating Range: Stable under variable temperature and humidity conditions
• Applications: Warm air furnaces, HVAC return air plenums, and general air handling systems
• Environmental Attribute: Frame manufactured using post-consumer recycled material

Performance and Application

The P312 filter series is designed for systems requiring moisture-resistant synthetic filtration media. The progressive-density polyester structure provides high dust-holding capacity while maintaining low resistance to airflow. The Monobond™ one-piece pinch frame construction forms a continuous, heat-sealed bond around the filter perimeter, eliminating weak corners and ensuring consistent air sealing. The bonded media configuration captures airborne particulates efficiently, supporting steady system performance and mechanical reliability in varying environmental conditions.

Usage Notes

Install with airflow direction aligned to the indicator printed on the frame. Replace at scheduled maintenance intervals or when visual inspection indicates particulate accumulation. The P312 filter is designed for single-use service and should not be cleaned or reused. Store flat in a dry environment prior to installation to maintain media and frame integrity.

Summary

Purolator® P312-15X20X1 Warm Air Filter provides consistent performance and durability through bonded polyester media and a precision-engineered Monobond™ frame. Designed for professional HVAC applications, it ensures stable airflow, high dust-holding capacity, and dependable filtration performance across residential, commercial, and light industrial systems.