Grow Out Pen - H:15" Layer Addition

SKU: GL40-03-TA

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Does not include water tank, frame and wheels. Power-washable grow out pen layer additions are perfect for expanding your production. Rear pullets (chickens), quail, pheasants, partridge, ducklings, goslings, teen turkeys, or game birds. With 15" of headspace, this unit will ensure your birds grow up safely before joining the flock. To prevent bird wetting, closed nipple drinker cups receive clean, algae-free water from the water tank above. To prevent foot problems, flooring is slightly larger than the brooder yet smaller than the adult pens. The unit boasts an improved door locking system to prevent escapees. To remove waste efficiency, there is a deep manure tray. Red feed grill cover is included to eliminate the flinging of feed, thus saving money..

Recommended for homesteaders, hatcheries, nurseries, poultry scientists, laboratories, agriculturists, breeders, hobbyists, urban farmers and commercial farmers. Add layer additions at any time to expand your production!


Full Weekly Chart - View Now

Cimuka Grow Out Pen Capacity (Model: GL40-03-TA) - HatchingTime

Weekly capacity is determined by your birds’ breed. If you have smaller birds, you can use our smaller, 9.5" Models. 9.5" Models

Need to upgrade or downsize? View All Models


Key Features

1) Hygienic Manure Tray
Deep manure tray collects droppings below. Prevent disease by having a system that removes harmful substances, like bacteria, from your bird's living space. 

2) Smart Feeder
Shock-proof, red grills lay on top of a removable feeding trough to reduce feed loss, inside and outside the cage. The removable feeding trough holds 6.5 pounds of feed. Customers claim to save 30% more of their feed with the flexible, shock-proof grills. 

3) Automatic Drinkers
Water tank (sold separately) uses an anti-algae, silicone hose to deliver filtered water through an anti-bacterial PVC square pipe to 3 steel nipple drinkers. Drinker cups are attached below the nipple drinkers to prevent bird wetting and to keep the manure dry. A seamless watering nipple system promotes the highest level of hygiene.

4) Elliptical Flooring
Flexible flooring makes standing, walking, spawning and mating more comfortable. This results in higher egg production rates and fewer feet problems. ComfortplastTM elliptical flooring is used, instead of galvanized wire, to create a rust-proof, safe, comfortable and hygienic environment for your birds.

5) Stackable Tier Design
Mix-&-match different layers to create the perfect setup. Cimuka grow out pens can be stacked with our brooding and breeding cages. To create a custom tiered experience, choose from different layer additions. View Layer Additions


Brand: Cimuka

Model: GL40-03-TA

Material: Recycled ABS Plastic


Assembly Required: Yes

Recommended Location: Indoors or enclosed shelter

Dimensions & Weight:

Assembled Unit: L 38.6” x W 23.6” x H 19”
- Layer (Internal): L 35.8” x W 17.3” x H 15”
- Box: L 39” x W 24” x H 6”
- Weight: 20 lb

Assembly / Parts List / Guides

Product Support View PDF


Brand: Cimuka

Model: GL40-03-TA

Material: ABS Plastic

EAN: 8682258040490

Assembly Required: Yes

Recommended Location: Indoors or enclosed shelter

Dimensions & Weight

Unit: L (38.6 in) x W (23.6 in) x H (19 in)

Box: L (39 in) x W (24 in) x H (6 in)


Layer Internal: L (35.8 in) x W (17.3 in) x H (15 in)


Weight: 20 lb

Support Documents

Assembly Video: View

Printable Assembly Guide: View

Parts List: View

Warranty: View


Questions? Contact Us



Weekly capacity is determined by your birds’ breed. If you have smaller birds, you can use our smaller, 9.5" Models. 9.5" Models

Product Support

Live Assembly Video

Parts List & User Manual


What type of birds work with this unit?

This model (15") is best suited for larger poultry, such as chicken, goose, turkey, duck.

Are these types of cages similar to brooders?

Yes, they are! However, they are meant for juvenile birds and do not come with a heat source. These cages can be beneficial to help keep your younger and more mature birds separate as well as free up space in your brooder for incoming chicks!

Do the Grow Out Pens come with dividable middle walls?

No, they do not. We also do not sell anything separately that can be used as a divider. Our brooders are fully open on the inside and dividers are not advised as the water source is located on one end of the cage and the chicks would not have a way to remove themselves from the heat.


Customer Reviews

Based on 6 reviews
Holly Phalen
More Natural

Of all the layers this one
Feels most natural.
It’s very useful for all stages and I might even see if a can get some hens to brood their own chicks in there. I’m using mine for quail.

Thank you for the review, Holly - The Hatching Time Team

Gina Kincaid
Excellent Product

After ordering and having a chance to use the brooder pen, I was so pleased that I decided to go ahead and order the grow out pen. I love the convenience of the flexible water nipple height, and the juvenile birds (chickens, ducks, guineas) like being able to see out. Brooding chicks has always been a challenge with keeping babies consistently warm, and the space clean without having to move them to/from another container during the process. These pens are very easy to clean and maintain, plus they look nice and professional. The grow out pen (15") is also large enough to keep an adult bird if they need to be separated - I've got a hen who is way too popular with the boys and needs a break. Very happy with my purchases from Hatching Time!

Thank you for the review, Gina. Great customization of your system using the Grow Out Pen layer addition - The Hatching Time Team

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