PleatLock Dust Collector Cartridge Filters

Clean Air Matrix

RoboVent engineers are experts in every category of air filtration and ventilation. The four categories below represent the major options for treating your contaminated air. RoboVent has designed solutions for each of these categories and has manufactured air filtration systems of unrivaled quality.

For more information about these categories, see Indoor Air Quality 101.


Large blowers and air filtration equipment draw contaminated air from the plant (typically at the ceiling level), filter it and return it to the plant. This is a proven solution in plants welding large parts with overhead cranes. It reduces the haze in the air, resulting in a cleaner working environment, with no negative pressure or heat loss.


Air in the immediate area of the welding activity is captured in a hood system, then filtered and returned to the plant. This is the best solution whenever possible. It allows for a more flexible system and removes the smoke directly from the operator's breathing zone. There are many types of source capture, including overhead hoods, crossflow hoods, fume arms and fume guns, some of which work better than others.


Large exhaust fans draw contaminated air from the plant and exhaust it directly into the environment, typically through the roof or walls. This is a traditional method and often results in negative air pressure. Also, it is very difficult to climate-control your plant and the system may not work well in the winter.

Air in the immediate area of the welding activity is captured in a hood, sent through ductwork, and exhausted directly into the environment. This is a lower capital cost alternative to filtration, but tends to result in high operating costs and large, unsightly ducting systems that work less efficiently with modifications. It also results in negative pressure problems.

Why PleatLock?

  • 35% more media extends filter life and saves money
  • More on-time with fewer filter changeouts
  • Maximizes pleats per inch in cellulose polyester blended media.
  • MERV 11 and MERV 15 available
  • Excellent efficiency on sub-micron particles
Cartridge Filter Replacement Specification

Available in A15 and M11

A15 PleatLock premium filter media is a proprietary cellulose polyester blend with an initial Minimum Efficiency Reporting Value of 15 (MERV 15).

M11 PleatLock filter media is a proprietary  cellulose polyester blend suitable for standard dust and fume applications.

35% more media captures more particulate and extends filter life.

PleatLock filters are now standard in all RoboVent dust and fume collectors. The reason is simple – they offer more media and better performance for less money. With more pleats per inch of filter than minipleat technology, PleatLock filters provide 35% more media to capture weld fume and metal cutting particulate, effectively extending filter life. This filter technology provides longer intervals between filter changes, less downtime for maintenance and greater savings on the cost of replacement filters.

MiniPleats vs. PleatLock

  • Hot Melt Separators on the inside of the pleat pack hold the pleats wide and open
  • Outter straps hold the outside of the pleat pack in position
  • Extra wide pleat spacing provides excellent release when reverse pulsed with compressed air
  • Best used on 100% polyester filters
  • Used in general industry, chemical, pharmaceutical, grinding, polishing, powder coating or laser cutting
  • Types of dust – metal, ceramics, fiberglass, bulk & powders, food dusts like sugar, whey and starches
  • Dimples are embossed on inside and outside of pleat pack forming channel to allow high air flows
  • 35% more media in the same amount of area compared to competing technologies
  • Fine fiber designs promote surface loading for better release of dust when reverse pulsed with compressed air and high filtration efficiency
  • Used for most metal applications, welding, laser, thermal spray, carbon black, bulk & powders, pharmaceutical and other general industrial applications
  • Types of dust – metal fumes, metal, bulk & powder

The Power in the Pleats

RoboVent’s PleatLock design embosses “locks” or “dimples” on both the inside and outside of the filter to maintain consistent pleat spacing. The embossed dimples prevent the pleats from pinching or collapsing and help keep channels clean as air enters and exits the filter. As a result, the entire filter surface is available to capture particulate. PleatLock technology the ideal choice for both cellulose polyester blended medias and can be coated with nanofiber.

man removing filter

Manufactured by RoboVent in Detroit, Michigan

PleatLock filters are made at our facility in Sterling Heights, Michigan, the same place that we manufacture dust and fume collectors. Rigorous quality control standards ensure that we produce, inspect, test and install high-quality filters in every piece of RoboVent equipment.

M11 PleatLock Premium Filter

M11 filer media is a proprietary blend of media for standard and some fume applications.
    •  Media blends include fire retardant medias
    •  Best used on dry, coarse particles
    •  Use on particles greater than 1 micron
    •  MERV11 initial filtration efficiency

A15 PleatLock Premium Filter

A15 filter media is a proprietary blend of media with a direct sprayed nanofiber coating.
    •  Fine fibers promote surface loading of dust
    •  Surface load dust pulses easily off the cartridge media
    •  Excellent for submicron dusts
    •  MERV15 initial filtration efficiency