Structured Manufacturing Data (2026)

Filter Frame

Based on aggregated insights from structured factory profiles within the CNFX directory, the standard Filter Frame used in the Machinery and Equipment Manufacturing sector typically supports operational capacities ranging from standard industrial configurations to heavy-duty production requirements.

Technical Definition & Core Assembly

A canonical Filter Frame is characterized by the integration of Frame Body and Seal Gasket. In industrial production environments, manufacturers listed on CNFX commonly emphasize Galvanized steel construction to support stable, high-cycle operation across diverse manufacturing scenarios.

Structural support component that holds and seals the filter media within a HEPA filter bank.

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Product Specifications

Technical details and manufacturing context for Filter Frame

Definition

A rigid structural component designed to securely hold filter media in place within a HEPA filter bank assembly. It provides dimensional stability, ensures proper sealing at the perimeter to prevent air bypass, and facilitates installation and replacement of filter elements. The frame maintains the integrity of the filter media under varying pressure differentials and airflow conditions.

Working Principle

The filter frame functions as a mechanical housing that contains and supports the pleated or flat filter media. It is designed to withstand the pressure differential created by airflow through the filter bank while maintaining a tight seal against the filter housing or adjacent frames to ensure all air passes through the filter media rather than leaking around the edges.

Common Materials

Galvanized steel, Aluminum, Stainless steel

Technical Parameters

External dimensions (length x width x depth) of the frame to ensure proper fit within the filter bank housing (mm) Per Request

Components / BOM

Frame Body Part
Primary structural element that defines the perimeter and provides rigidity

Material: Galvanized steel
Seal Gasket Part
Creates an airtight seal between the frame and filter housing

Material: Neoprene rubber
Media Support Grid Part
Internal structure that supports filter media and prevents collapse under pressure

Material: Aluminum

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Filter Frame.

Applied To / Applications

This component is essential for the following industrial systems and equipment:

HEPA Filter Bank

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HEPA/ULPA Filter Housing

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HEPA Filter Housing

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Industrial Ecosystem & Supply Chain Structure

Complementary Systems

Downstream Applications

Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits

pressure:	Max 2.5 kPa differential pressure
flow rate:	Up to 5000 m³/h per frame
temperature:	-40°C to 120°C
slurry concentration:	Not applicable - dry air/gas filtration only

Media Compatibility

✓ HEPA filter media (glass fiber) ✓ PTFE membrane media ✓ Polyester non-woven media

Unsuitable: High moisture or condensing environments without proper drainage

Sizing Data Required

Filter bank dimensions (height x width)
Required air flow rate (m³/h)
System operating pressure differential (Pa)

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause

Corrosion-induced structural weakening

Cause: Exposure to corrosive fluids, high humidity, or chemical vapors leading to material degradation, particularly at weld points or joints, compromising structural integrity.

Fatigue cracking at stress concentration points

Cause: Cyclic loading from vibration, pressure fluctuations, or mechanical impacts causing micro-cracks to initiate and propagate at corners, bolt holes, or support attachments.

Maintenance Indicators

Visible rust streaks, pitting, or material loss on frame surfaces, especially near welds or connections
Audible rattling, creaking, or abnormal vibration during operation indicating loose fasteners or developing cracks

Engineering Tips

Implement regular non-destructive testing (e.g., ultrasonic thickness gauging, dye penetrant inspection) at high-stress areas to detect early-stage cracking or corrosion before catastrophic failure
Apply protective coatings (epoxy, galvanization) and ensure proper drainage design to prevent fluid accumulation and corrosive attack, supplemented by scheduled coating integrity inspections

Compliance & Manufacturing Standards

Reference Standards

ISO 16890:2016 (Air filters for general ventilation) ANSI/ASHRAE 52.2-2017 (Method of Testing General Ventilation Air-Cleaning Devices for Removal Efficiency by Particle Size) DIN EN 779:2012 (Particulate air filters for general ventilation)

Manufacturing Precision

Frame Squareness: +/-0.5mm per 100mm length
Sealing Surface Flatness: 0.2mm maximum deviation

Quality Inspection

Leak Test (Pressure decay method)
Dimensional Verification (CMM or caliper measurement)

Factories Producing Filter Frame

Manufacturer profiles with relevant production capability in China

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Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

Procurement Evaluation Criteria

Not customer reviews or live demand data. These dimensions support RFQ preparation and supplier evaluation.

Technical documentation

4/5

Manufacturing capability

4/5

Inspection readiness

5/5

Supplier transparency

3/5

These scores are example evaluation dimensions, not real customer ratings, country-specific buyer feedback, or live inquiry activity.

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Frequently Asked Questions

What materials are available for filter frames in machinery manufacturing?

Filter frames are typically constructed from galvanized steel, aluminum, or stainless steel, each offering different benefits for corrosion resistance, weight, and durability in industrial environments.

How does a filter frame ensure proper sealing in a HEPA filter bank?

The filter frame includes a seal gasket that creates an airtight seal between the frame and filter media, preventing air bypass and ensuring maximum filtration efficiency in HEPA systems.

What are the main components of a filter frame assembly?

A complete filter frame assembly consists of three main components: the frame body for structural support, the media support grid that holds the filter material, and the seal gasket that ensures airtight operation.

Can I contact factories directly on CNFX?

CNFX is an open directory, not a transaction platform. Each factory profile provides direct contact information and production details to help you initiate direct inquiries with Chinese suppliers.

Data Basis

CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks.

Preliminary Technical Classification

This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

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