Front view of an Optima Klima calf barn with three open pens and calves at the feed barrier

Outdoor group housing

Optima Klima Calf Barn

The Optima Klima Stal gives your calves an excellent environment to grow well, with very good air quality and easy access to feed and water.

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Wall thickness of the plastic panels
50 mm
U-profiles, fixed to concrete
Stainless steel
Roof of sandwich panels
Insulated
Calves per pen
6 to 8

Three sizes, one system

Which pen suits your calves?

All three barns are 3,000 mm wide and built the same way. They differ in depth, and so in the space per pen. All floor plans are drawn to one scale and all side views to another, so you can compare the sizes at a glance. The barn stands on a concrete upstand that you pour to the height you want: the higher the upstand, the higher the barn.

Floor plan of one pen, internal size 4,950 × 3,000 mm, 14.0 m², walk-through gate on the right of the front gate 14.0 m² 4,950 3,000
Floor plan
Side view of the Optima Klima Stal (OKS): 5,000 mm deep, 2,630 mm high at the front and 1,960 mm at the back, roof 6,000 mm, on a concrete upstand of approx. 250 mm at the front and approx. 500 mm at the back, height to suit approx. 250 approx. 500 concrete upstand to suit 1,960 2,630 5,000 roof 6,000 frontback
Side view

Optima Klima Stal (OKS)

The compact pen, 14.0 m²

Internal dimensions
4,950 × 3,000 mm
Floor area per pen
14.0 m²
Height front / back
2,630 / 1,960 mm
Concrete upstand under the walls
approx. 250 mm front, 500 mm back
Roof panels
6,000 mm
Front gate
3,000 mm wide, 1,170 mm high
Calves per pen
6 to 8
Item no.
10535

The front gate is normally set back 300 mm into the pen, so the net floor area of the pen is about 14 m².

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Floor plan of one pen, internal size 5,100 × 3,000 mm, 15.3 m², walk-through gate on the right of the front gate 15.3 m² 5,100 3,000
Floor plan
Side view of the Optima Klima Stal Next Gen: 5,000 mm deep, 2,630 mm high at the front and 1,960 mm at the back, roof 6,500 mm, on a concrete upstand of approx. 250 mm at the front and approx. 500 mm at the back, height to suit approx. 250 approx. 500 concrete upstand to suit 1,960 2,630 5,000 roof 6,500 frontback
Side view

Optima Klima Stal Next Gen

A little deeper, 15.3 m² per pen

Internal dimensions
5,100 × 3,000 mm
Floor area per pen
15.3 m²
Height front / back
2,630 / 1,960 mm
Concrete upstand under the walls
approx. 250 mm front, 500 mm back
Roof panels
6,500 mm
Front gate
3,000 mm wide, 1,170 mm high
Calves per pen
4 to 8
Item no.
10768
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Floor plan of one pen, internal size 6,100 × 3,000 mm, 18.3 m², walk-through gate on the right of the front gate 18.3 m² 6,100 3,000
Floor plan
Side view of the Optima Klima Stal XL: 6,000 mm deep, 2,630 mm high at the front and 1,960 mm at the back, roof 7,500 mm, on a concrete upstand of approx. 250 mm at the front and approx. 500 mm at the back, height to suit approx. 250 approx. 500 concrete upstand to suit 1,960 2,630 6,000 roof 7,500 frontback
Side view

Optima Klima Stal XL

The most spacious pen, 18.3 m²

Internal dimensions
6,100 × 3,000 mm
Floor area per pen
18.3 m²
Height front / back
2,630 / 1,960 mm
Concrete upstand under the walls
approx. 250 mm front, 500 mm back
Roof panels
7,500 mm
Front gate
3,000 mm wide, 1,170 mm high
Calves per pen
6 to 8
Item no.
10769

Front gate with adjustable neck rail and walk-through gate, hinged on an IPE 160 post. It swings open, so mucking out the pens is easy.

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All three have a front gate with a walk-through gate, and a water bowl on the mains supply.

How the barn is built

Solid walls, an open front and an insulated roof

The barns are made of fully solid, sturdy plastic panels that resist UV and acid. Thanks to the simple construction, the system can be extended as far as you like.

  1. Galvanised steel frame of an Optima Klima Stal on a concrete foundation, before the walls go on

    Steel frame on concrete

    A galvanised steel frame on a concrete foundation forms the base. The water supply connection is in place before the walls go up.

  2. Solid back wall of plastic panels on an Optima Klima Stal

    50 mm plastic walls

    The panels are 50 mm thick and are fixed to the concrete with stainless steel U-profiles. The back wall is solid and the front is open.

  3. Underside of the insulated roof and steel frame of the Optima Klima Stal XL

    Insulated roof

    Well-insulated sandwich panels form the roof. Summer and winter, they keep the climate in the pens just right.

In daily use

Feeding, checking and mucking out, with no detours

A Milkbar bucket hangs on the feed barrier while calves drink

Easy feeding

With the Milkbar and a feed trough, feeding is quick and simple.

Water bowl on the mains supply, on the wall of a pen in the Optima Klima Stal XL

Water at all times

Water comes from a water bowl connected to the mains supply.

A farm worker opens the walk-through gate in the front gate of a pen

Every animal in view

Small groups make it easy to keep an eye on every calf, and the walk-through gate gets you to them quickly.

A loader drives into a pen of the Optima Klima Stal to muck out

Quick mucking out

The front gate lifts out or swings open, so the pens are easy to muck out.

Options per pen

Fit out each pen the way you want

A pen does not have to be a group pen. As an option, you can put individual or pair pens in it, or add a double door and use it for storage or as a feed kitchen.

  • Individual pens for the first weeks of life
  • Pair pens for two calves together
  • OKS Feed Kitchen with a double door, for storage or as a feed kitchen
See the OKS Feed Kitchen See the pair pens
Pen of an Optima Klima Stal with the double door open, used as storage for a big bag and pallets of feed

1 / 17Optima Klima Stal Next Gen: long row of pens with calves at the feed barrier

Frequently asked questions about the Optima Klima Calf Barn

Torn between two sizes? Call us and we will work it out with you.

How many calves fit in a pen?

A pen holds 6 to 8 calves. Small groups make it easy to keep an eye on every animal, and the walk-through gate gets you to them quickly.

Can I extend the barn later?

Yes. Thanks to its simple construction, the system can be extended as far as you like: add pens as your farm grows.

How do the calves get feed and water?

With the Milkbar and a feed trough, feeding is quick and simple. Water comes from a water bowl connected to the mains supply.

What is the difference between the three sizes?

All three are 3,000 mm wide. The difference is the depth of the pen: 4,950 mm for the OKS, 5,100 mm for the Optima Klima Stal Next Gen and 6,100 mm for the Optima Klima Stal XL. That takes the floor area from 14.0 to 18.3 m² per pen.

Can I put individual pens inside an OKS pen?

Yes. As an option, an OKS pen can take individual pens or pair pens, or a double door to turn it into storage or a feed kitchen.

DairyTop adviser in a barn, next to a cow at the feed barrier

An Optima Klima Calf Barn for your farm?

Tell us how many calves you want to keep in groups and how much space you have. We will advise you on the size, the number of pens and the fit-out.

Request a quote +31 (0)593 24 17 12

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