NexGen Rat 1800

The lightest, most cost-effective, easiest-to-use animal-friendly IVC system in the LAS industry, now configured for rat housing.

  • 279 in² / 1800 cm² for rat housing
  • Smooth sliding, easy gliding cage docking / undocking
  • Low vibration spares animals and staff from discomfort
  • Observation made easier and faster

Easy Cage Removal

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 need to fully remove cages from the rack.

Quiet Operation

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, easier to use, easier to move and manipulate, validated by an independent ergonomist. NexGen provides reliable protection for your staff and your animals. 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.

Cage System with Wire Bar Lid and Front Loft
23.161 in x 11.253 in x 16.228 in
588 mm x 286 mm x 412 mm
Floor space: 279 in² | 1800 cm²
Cage System with Rear Shelf and Enrichment Loft
23.161 in x 11.253 in x 16.228 in
588 mm x 286 mm x 412 mm
Floor space: 279 in² | 1800 cm²


350 mL
.87 lbs | 395 g (filled)
Item # PC350BCL+SLC
450 mL
1.12 lbs | 508 g (filled)
Item # PC450BCL+SLC


External Bottle Top
Available with or without locks
Optional Filter Guard available
22.511 in x 6.742 in x 16.220 in | 4.10 lbs
572 mm x 171 mm x 412 mm | 1860 g
Item # 230347-2


3 in x 5 in Vertical
Item # VH35P9-8
(also available in 3 in x 4 in)
3 in x 5 in Horizontal
Item # HH35P9-8
(also available in 3 in x 4 in)

WBL / Feeder

Wire Bar Lid
Food capacity: 998 g
21.766 in x 6.683 in x 15.256 in | 3.60 lbs
553 mm x 170 mm x 388 mm | 1633 g
Item # 413126
Chew Guard
Food capacity: 998 g
21.766 in x 6.831 in x 15.193 in | 3.60 lbs
553 mm x 174 mm x 386 mm | 1633 g
Item # 414194
Hanging Feeder: Rat
Food capacity: 1202 g
5.495 in x 7.311 in x 4.879 in | 1.00 lbs
140 mm x 186 mm x 124 mm | 454 g
Item # 228934
Hanging Feeder: Guinea Pig
Food capacity: 998 g
3.5 in x 7.218 in x 5.519 in | 0.84 lbs
89 mm x 183 mm x 140 mm | 381 g
Item # 228542
Hanging Feeder: Guinea Pig/Ferret
Food capacity: 1202 g
5.065 in x 7.264 in x 4.196 in | 1.44 lbs
129 mm x 185 mm x 107 mm | 653 g
Item # 228560


Cage Divider
20.241 in x 10.157 in x 14.623 in | 1.65 lbs
514 mm x 258 mm x 371 mm | 748 g
Item # 227078-1
Enrichment Loft
7.430 in x 4.188 in x 3.525 in | .30 lbs
189 mm x 106 mm x 90 mm | 136 g
Item # 315584
Front Loft
5.923 in x .297 in x 3.500 in | .15 lbs
150 mm x 8 mm x 89 mm | 68 g
Item # 227356
Rear Shelf (WBL Attachment)
21.188 in x 0.500 in x 5.435 in | 1.05 lbs
538 mm x 13 mm x 138 mm | 476 g
Item # 227694
Rear Shelf (Stand Alone)
21.719 in x 0.689 in x 15.249 in | 1.90 lbs
552 mm x 18 mm x 387 mm | 862 g
Item # 227429


23.161 in x 7.644 in x 15.534 in | 5.40 lbs
588 mm x 194 mm x 395 mm | 2449 g
Item # 226231-1 (without automatic watering - shown above)
Item # 226231-2 (with automatic watering)

All component data shown above are accurate as of publication date, but are subject to change without notice. Please consult with your Technical Sales Consultant before ordering to ensure accuracy.

Click here to learn about the chemical resistance of the medical-grade specialty polymers used in our caging.
NexGen T-99 cage top filters are not dry heat sterilization compatible. A dry heat compatible filter can be provided.
All dimensions shown are Width x Height x Depth.

Colony Health Monitoring


Allentown and Charles River Laboratories have partnered together to develop the Exhaust Air Dust collection methodology — or EAD®. Available in two configurations, neither system requires the use of soiled-bedding sentinel animals, but instead captures and samples aggregate exhaust air from IVCs using a patented collection media that attracts dust particles but doesn't load like a filter, or impact airflow.

Learn More

Sentinel™ EAD®: US Patent 10,575,495 B2, Canadian Patent 2,987,625. Sentinel2™: Patent Pending. Sentinel is a trademark of Allentown, LLC. EAD is a registered trademark of Charles River Laboratories, Inc.
Airflow Solutions

Industry leading airflow solutions.

The EcoFlo family of blowers are the most energy efficient, ergonomically friendly, and quietest blowers we've ever produced. Offered in a wide variety of solution friendly configurations - including rack mounted, wall mounted, ceiling mounted and free-standing tower - these blowers share the same efficiencies, ease of use, superior control, and dependability that are the hallmarks of all Allentown products.

Learn More


The difference is in the details. Take a closer look.

With more than 50 years worth of experience and expertise in design, engineering and manufacturing, Allentown solutions are not only crafted to perfection, they are also meticulously documented to provide users with all of the information needed to maximize their value. Take a closer look by downloading the data sheet.

Download Data Sheet