16" x 25" x 1" Disposable Synthetic Warm Air Panel Filter, Merv 4

Product Overview

The Purolator® P312 Warm Air Filter (Model P312-16X25X1) is a disposable synthetic panel air filter engineered for HVAC systems operating in residential, commercial, and light industrial environments. Designed with progressive-density bonded polyester fiber media and a one-piece heat-sealed Monobond™ pinch frame, this filter provides structural integrity, consistent airflow, and effective particulate retention across a range of service conditions.

Technical Specifications

• Manufacturer: Purolator®
• Model: P312-16X25X1
• Nominal Size: 16 in. x 25 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 fabricated from post-consumer recycled materials
• Seal Method: Continuous thermal bond securing media to frame perimeter, eliminating weak points and air bypass
• Binder Type: High tensile strength binder enhancing rigidity and maintaining structural integrity under stress
• Media Design: Interlocking fiber matrix forming multiple lint and dust retention zones
• Dust Holding Capacity: High, with balanced particle loading and uniform distribution through media depth
• Airflow Resistance: Low static pressure for efficient HVAC system performance
• Operating Conditions: Stable under variable temperature and humidity environments
• Applications: Warm air furnaces, return air plenums, and general air handling and ventilation systems
• Environmental Attribute: Frame constructed using post-consumer recycled materials

Performance and Application

The P312 series filter utilizes a progressive-density polyester media structure engineered to optimize dust holding while minimizing resistance to airflow. The Monobond™ heat-sealed frame construction creates a continuous, uniform bond between media and frame, eliminating corner failure and air bypass. The non-cellulose synthetic media offers moisture resistance and stable mechanical performance, making it suitable for HVAC systems operating under fluctuating environmental conditions. Its consistent performance characteristics ensure reliable airflow and particulate capture throughout its service interval.

Usage Notes

Install according to the directional airflow indicator printed on the filter frame. Replace at scheduled maintenance intervals or when visible particulate accumulation occurs. Do not wash or reuse. Store flat in a clean, dry area prior to installation to maintain media integrity and frame alignment.

Summary

Purolator® P312-16X25X1 Warm Air Filter provides dependable filtration performance with bonded polyester media and a precision heat-sealed Monobond™ frame. Engineered for consistent airflow, structural strength, and high dust-holding capacity, it ensures reliable operation in residential, commercial, and light industrial HVAC applications.