Secondary Filters

MV95

The Viledon® MV95 secondary filter is one of the most durable extended surface V-Cell type filters in the market. The media is corrosion-proof, moisture resistant, and constructed to eliminate fibre-shedding. Also, the MV95 has  low pressure drop at high efficiency levels, while still offering unparalleled media strength. Freudenburg’s® MV95  also offers a sturdy, yet lightweight design for ease of installation and transportation. Available in MERV 16 at 24 x 24, 12 x 24, 20 x 20, and 20 x 24 sizes.

VariCel® 2+

The VariCel® 2+ is an excellent solution for harsh working environments with long filter life requirements. Its patented Impress pleating technology allows for reinforced pleats which hold their shape when mechanically tested, unlike media from other filters in its class. The media is designed to reduce operating costs through consistent media spacing by allowing for a low pressure drop and reduced airflow resistance. The sleek and lightweight design allows for superior shipping, storing, and installation. This filter is suitable for industrial and commercial applications involving high humidity, turbulent airflow, variable air volume and long filter life requirements.

The VariCel® 2+ comes in MERV 11, 14, and 15. Available in Standard Capacity (SD) or High Capacity (HC).

Rigid-Pak

The Rigid-Pak extended surface air filter has been engineered to provide medium to high efficiency filtration in built-up filter banks and side access housings. Due to its completely rigid design, the Rigid-Pak eliminates the need for retainers and special external wire media supports in variable air volume applications. The Rigid-Pak is designed to operate at a face velocity of 500 fpm and to a final Resistance of 1.2″ W.C.

Extended Surface Pocket Filters with Fiberglass & Synthetic Media

  • Unique pocket design lengthens filter life
  • Low resistance and high dust holding capacity
  • Engineered for performance reliability

Fiberglass & Synthetic Media
Available in four efficiencies:

  • MERV 15
  • MERV 14 (Synthetic only)
  • MERV 12
  • MERV 8

Designed for high performance in demanding operating conditions, the Tech Bag extended surface pocket filters are perfect as pre filters and final filters for particulate removal where clean air is required. Tech Bags are an excellent choice for healthcare facilities, automotive paint booths, commercial buildings, and various industrial applications. The Tech Bag features a unique pocket configuration that guarantees complete pocket inflation and eliminates crowding or leakage.

Bio-Pac – High Efficiency Air Filter

  • Rugged interlocking diffusion panels secure and protect filter media pockets while evenly distributing air over entire pocket surface. This results in longer life and better performance.
  • Pockets available in either premium high loft fiberglass or synthetic media in a range of efficiencies and air flow capacities.
  • Span stitched pocket assembly and double stitched, taped pocket edges assure filter integrity in even the most hostile environments.
  • Any pocket depth up to 36″. Integral support loops standard on all BIO-PACs*.
  • UL Class 1 fiberglass media pockets available for high temperature applications.
  • Environmentally friendly, reusable polypropylene and recyclable steel components can be part of your LEED “green building” program.
  • Guaranteed performance supported by independent lab testing in accordance with ASHRAE test standard 52.2.
  • Minimum efficiency reporting value(MERV) up to MERV 14 and 96.1% composite minimum efficiency(CME) on 1 micron and larger particles @ 1968 cfm.
  • Patented design

VariCel®

VariCel® filters are rigid, self supporting filters with dual density media. VariCels® are available in three efficiencies MERV 14, MERV 13, and MERV 11. They are also  are available in 6″ or 12″ depths. Also offered with antimicrobial in 90-95% and 60-65% efficiency.

A unique flanged header on the air entering side allows the filter to be easily inserted and latched into front and side access systems.

VariCel® media is made with pleated microglass paper bonded to corrugated aluminum separators. These separators maintain uniform pleat spacing for optimum airflow. The media is made with dual density construction consisting of coarser fibers on the air entering side and finer fibers on the air leaving side. This design allows dirt particles to be collected throughout depth of the filter utilizing the media’s full capacity and cleaning potential. A liner of microglass mat packing at the top and bottom of the media pack prevents damage and bypass leakage.

Additional options include expanded aluminized steel faceguards, factory-installed gaskets and vinyl coated separators for corrosive conditions.

VariCel II Filter

Designed for high performance under both normal and difficult operating conditions, VariCel II is appropriate for general HVAC and applications operating with variable air volume, turbulent airflow, and high humidity. The combination of durable construction and high efficiency also makes VariCel II ideal for specialized systems such as diffusion filters in paint booths and prefilters in cleanrooms.

VariCel II’s slim line design provides minimum resistance with the high dust loading capacity of larger, traditional filters. The pleated media is made of microglass paper with a dual density fiber construction and water repellent binder. Two die cut boxes form a sealed, double wall around the perimeter of the filter. Media pack support retainers and adhesive pleat separators are bonded and applied to the pleats. Together, these form a unitized, rigid media pack that maintains pleat spacing and a maximum, even distribution of airflow.

The thinner depth and fiber board frame make handling, storage, and installation the easiest of any high efficiency filter. Disposal is also simplified from the absence of metal components.

VariCel II M Filter

VariCel II M filters are designed for service in HVAC systems with difficult operating conditions, such as variable air volume, turbulent air flow, repeated fan shutdown, or high humidity. Metal construction improves performance while contributing to superior moisture resistance.

The slim-line design of the VariCel II M provides minimum resistance and maximum dust loading capacity, while lowering operating costs. The pleated media is made of microglass paper with a dual density fiber construction and water repellent binder. Rows of adhesive beads are applied to the media to maintain even pleat spacing and provide maximum airflow. The consistent pleat spacing of the media allows higher dust holding capacity and full use of the entire depth of the media. An aluminized steel, expanded metal faceguard is added to the air leaving side of the filter.

Equipped with a U-channel frame, VariCel II M filters can be installed in holding frames or side access housings with a 4″ wide track.

VariCel II MH Filter

VariCel II MH filters are designed for service in HVAC systems with difficult operating conditions, such as variable air volume, turbulent air flow, repeated fan shutdown, or high humidity. Metal construction improves performance while contributing to superior moisture resistance.

The slim-line design of the VariCel II MH provides minimum resistance and maximum dust loading capacity, while lowering operating costs. The pleated media is made of microglass paper with a dual density fiber construction and water repellent binder. Rows of adhesive beads are applied to the media to maintain even pleat spacing and provide maximum airflow. The consistent pleat spacing of the media allows higher dust holding capacity and full use of the entire depth of the media. A galvanized steel, expanded metal faceguard is added to the air leaving side of every filter. Faceguards on both sides are optional.

With its galvanized steel header, the VariCel II MH filter can be installed in holding frames or side access housings with a 13/16″ wide track. The tracks may be of the stationary type, such as the AAF PolySeal, or with a removable locking mechanism to seal the filters, such as the AAF LeverLock.

VariCel M-Pak Filter

The VariCel M-Pak filter has the same media area and half the weight of a standard 12″-deep VariCel. The M-Pak delivers comparable efficiency, pressure drop, and overall performance, but in a much smaller, 6″ package. Its space-saving design reduces freight, storage, and handling costs. M-Pak filters are designed for use in systems with difficult operating conditions, including variable air volume, turbulence, repeated fan shutdown, high humidity or intermittent exposure to water.

High-impact polystyrene cell sides enclose the fixed media pack, made of high-efficiency, moisture resistant fiberglass. The dual layered media is arranged in a progressive density pattern to maximize media utilization and dust holding capacity. Thermoplastic separators maintain uniform spacing between pleats to allow optimal airflow. The separators also ensure a large effective media area to minimize pressure drop and eliminate the need for aluminum separators. All components of the VariCel M-Pak are fully incinerable.

Gasketing and a reverse airflow model are available.