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Building upon the success of NexGen Rat 900, Allentown has responded to industry demand for larger, yet more manageable rat housing with the introduction of NexGen Rat 1800. The new cage has a wider, more ergonomic design for balanced weight distribution during handling, ergonomic handles on side of cage for ease of manipulation, plus optional configurations for both Guinea pigs and Ferrets!


The Montreal Neurological Institute and Hospital is a world-leading destination for brain research and advanced patient care. In September of 2016, Janette Green, Associate Director of the Centre for Neurological Disease Models, and Operations Manager Lisa Volume sat down for an interview with Allentown to discuss their selection of Allentown animal housing solutions for their brand new vivarium.

CLICK HERE to watch the video.


Smooth and easy sliding in, and the same sliding out...less stress and vibration for your animals and less repetitive motion strain on your staff... those are the benefits of NexGen's innovative plastic runner system. So innovative that the NexGen is changing the way animal care staff perform their wellness checks...they just slide their occupied cages out of their stalls 3/4 of the way and assess their animals. No need to fully remove cages from the rack...making animal observation simpler, easier and faster than ever before!


There's so little you'll hear when using a NexGen that it's easier to describe what you won't: no loud hum, no swirling fan, no air noise as it gets sucked into the blower intake...just quiet. Energy efficient ECM motors along with design expertise applied by Allentown airflow experts ensures you'll barely even notice that the blowers are on!


Lighter, smaller, easier to move and manipulate...that's the NexGen!
Reengineered to be stronger yet lighter, the NexGen uses less stainless steel and a combination of high-quality plastic materials to make the rack
easier to work with. Coupled with easy to assemble cage systems, working with the NexGen is a breeze!


Cage System with Wire Bar Lid & Front Loft
22.511" x 11.285" x 16.220"
572mm x 287mm x 412mm
Floor space: 280 in² | 1805 cm²

Cage System with Rear Shelf & Nesting Box
22.511" x 11.285" x 16.157"
572mm x 287mm x 410mm
Floor space: 280 in² | 1805 cm²

External Bottle Top
Available with or without Locks
22.511" x 6.742" x 16.220"
572mm x 171mm x 412mm
Item #: 226232-2

Wire Bar Lid
21.766" x 6.683" x 15.256"
553mm x 170mm x 388mm
Item #: 413126

Front Loft
5.923" x 2.97" x 3.500"
150mm x 8mm x 89mm
Item #: 227356

Rear Shelf (WBL Attachment)
21.188" x 0.500" x 5.435"
538mm x 13mm x 138mm
Item #: 227694

Rear Shelf (Stand Alone)
21.719" x 0.689" x 15.249"
552mm x 18mm x 287mm
Item #: 227429

Enrichment Loft

7.430" x 4.188" x 3.525"
189mm x 106mm x 90mm
Item #: 315584

Hanging Feeder
5.562" x 7.285" x 3.794"
141mm x 185mm x 96mm
Item #: 227564

Automatic Watering not shown
23.161" x 7.644" x 15.534"
588mm x 194mm x 395mm
Item #: 226231-1
All Dimensions Shown (Width x Height x Depth)
NexGen T-99 cage top filters are not dry heat sterilization compatible. A dry heat compatible filter can be provided.
Click here to learn about the chemical resistance of the medical-grade specialty polymers used in our caging.


Cage Capacities
10, 15, 20, 30

Capacity Width Height Depth Sides
10 50.506" (1283 mm) 67.972" (1726 mm) 24.5" (622 mm) 1
15 74.101" (1882 mm) 67.972" (1726 mm) 24.5" (622 mm) 1
20 54.675" (1389 mm) 67.972" (1726 mm) 35.0" (899 mm) 2
30 78.270" (1988 mm) 67.972" (1726 mm) 35.0" (899 mm) 2

Click to view full specifications.


The NexGen 1800 cage is so easy and flexible that it can accommodate both ferrets and guinea pigs as well as rats! Ask your local sales representative about the optional cage components needed to make this happen.

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