“Over 66 years of Innovation and Service to the Research Community”

Maxi-Miser® Rack Systems


The Maxi-Miser® PIV System can be constructed as a fixed or mobile unit using 14 basic cage designs. The removable shelf/plenums design eliminates the need for rear cage exhaust ports required with other cage systems. This provides maximum visibility and light transmission through the rack. All units are available with bottle watering, automatic watering systems or a combination of both.

PIV Cage Air Flow Technology


Low velocity HEPA filtered air is supplied through our sealed shelf plenums directly into the cage through air supply orifices above the cage filter top. Air enters through the filter top at the rear of the cage to the front and up through exhaust air orifices located above the filter top as shown below. This design eliminated high velocity devices that penetrate the side wall of the cage and tend to create turbulance inside the cage. Depending on your isolation requirements, the system can maintain either positive or negative pressure with respect to the room.

PIV Cage Flow

Shelf Plenum Orifices

Free Standing Housing System

Wall Mounted and Free Standing Housing Systems


This system allows maximum density housing of rodents using a minimum of floor space.


Units are available in either single bay, double bay or triple bay construction. The fixed system may utilize shelves of differing lengths to allow the overall length to match your existing room requirements.


• Maximum of 12 shelves high

• 6 to 14 cages per shelf

• 8 to 12 shelves per rack

• Maximizes density up to 280 cage positions

• Combination of stainless steel and anodized

  aluminum construction

Mobile Housing System

Mobile Housing Systems


This system is designed to allow flexibility in size, type of units and placement within your facility. Mobile Cage Systems are constructed for ease of mobility. These racks are equipped with stainless steel casters, grease fittings and optional locking wheels.


• Maximum of 10 shelves high

• 6 to 14 cages per shelf

• Total cage accommodations range from

  40 to 140 cages per rack

• Stainless steel construction

• Various methods of supplying

  and exhausting air to systems

NEW THOREN Green Sustainable Blowers [Learn More]

Maxi-Miser® Rack Monitor controls supply and exhaust pressures to maintain both at the pre-set levels. This unit features our proprietary air flow technology that calculates air changes per hour for any of the different size Thoren cages. LEARN MORE


Removable Shelf/Plenum System


Each supporting plenum shelf suspends individual cages, providing a seal between the cage and the plenum.

Our modular racks feature the industry's only removable shelf

plenum system that can be washed and sanitized.

Shelf Wash Rack



© Copyright 2020 Thoren Caging Systems, Inc.