What it is: 3M 501 Filter Retainer , 20EA/BX is a cartridge/filter intended for construction and industrial respiratory protection programs.

Best for: Replacing filters/cartridges on compatible respirators and tailoring protection to the hazard type.

Ideal for filter when used as directed.

Not for: Not for use in oxygen-deficient atmospheres. Always follow NIOSH/OSHA guidance, manufacturer instructions, and your written respiratory protection program. Not for hazards beyond the filter/cartridge type—confirm approved contaminants and service life on the spec sheet.

Key details:

• Type: Cartridge/Filter
• Cartridge/filter type: Filter
• Use type: Accessory
• Sold as: Box of 20

Key features:

• Protection type: Filter.
• Replacement filtration component for approved respirator systems.

Frequently Asked Questions

Q: How is this item sold?
A: Sold as a box of 20 units.

Q: How do I choose the correct cartridge/filter?
A: Select based on the hazard type and the manufacturer’s approvals for the respirator system. Confirm compatibility and approved contaminants on the spec sheet.

Why buy from Beeline Purchasing:

• Jobsite-ready PPE sourcing and fast reorder support
• Bulk pricing and dependable fulfillment for crews
• Trusted distributor focused on safety and compliance