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Small Greenhouse in the garden
Arcus S2.00 m2.00 m2.10 m4.00 m²
Arcus M2.45 m3.00 m2.10 m7.35 m²
Arcus L3.00 m4.00 m2.10 m12.00 m²


The round greenhouse has been reinvented by us! Thanks to the continuously vertically sliding side windows and the split hinged door in the gable, the greenhouse can always be optimally ventilated. The design is such that the half-round and flexible “glazing” can slide underneath or above each other, creating a side entrance. This narrow greenhouse offers floor plans starting from 2 × 2 m and is ideal for allotments and more without a foundation.

Twin-wall sheets Seal profiles and constructions Seal 40 Years warranty
  • Side elements can be slid up to the roof
  • High-strength aluminium profiles specially developed
  • Stainless steel operating handle for opening
  • Integrated sliding ventilator
Twin-wall sheets Seal profiles and constructions Seal 40 Years warranty


Arch Greenhouse Arcus
Bio-Top aluminium profile

High-quality aluminium profiles

As a greenhouse manufacturer, we develop our own high-quality aluminium profile systems that precisely meet the highest requirements. Our range now includes approximately 450 proprietary profile cross-sections. Roof, gutter, and base profiles are particularly important for stability. All load-bearing profiles are continuous, thus preventing weak points (leakages).

Arcus with practical ventilation through sliding side elements

Optimal ventilation

The Arcus is equipped with a split hinged door (Dutch door; approx. 0.73 m wide and 1.80 m high) and an integrated sliding vent as standard to ensure natural ventilation.

Easy gardening in the Arcus

Form & function united

The arched greenhouse is a classic, and our Arcus is the modern evolution. Side sliding elements simplify access and significantly increase planting options. These can be smoothly slid either on both sides approximately 1.10 m or on one side approximately 2.00 m under the roof. Working in the greenhouse is also made easier and barrier-free as a result.

Door stopper Arcus

Time-saving assembly

All greenhouses by Hoklartherm are constructed in a modular system, which allows for easy assembly following a step-by-step procedure. Windows and doors are already pre-assembled. To ensure everything goes smoothly, all products undergo strict quality control before delivery.

Foundation frame included with the Arcus

Foundation frame included

The greenhouse is delivered with an aluminium foundation frame as standard, which can be inserted into the ground or alternatively placed on a prepared surface, such as garden slabs or pavement. No additional foundation is required.


Split revolving door

Additional options:
Stainless steel operating handle
Aluminium garden bed border
Stainless steel operating handle: €14 per piece (for opening the side panels with a straight back)

The “glassing” consists of 6 mm ISO twin-wall-sheets on the sides and 10 mm in the gables.

Glassing with clear, transparent, and impact-resistant plastic panes in the highly sliding side windows for an additional charge
(Additional cost: Arcus S = €100 per pane / €200 per segment.
Arcus M = €105 per pane / €210 per segment.
Arcus L = €110 per pane / €220 per segment.)

Decorative strip Bio-top



Size is not the only factor when it comes to greenhouses; the material plays a crucial role as well. Specially developed aluminium profiles from Hoklartherm ensure a high load capacity – the crucial point for many greenhouses when it comes to safety and durability. Upon request, we are happy to customize our products to your specific desires. For example, you can choose ISO safety glass: This real glass not only meets the highest aesthetic standards, but is also particularly stable and sustainable.




Your contact for the topic Greenhouses
Customer Service Jan Weber

Jan Weber

+49 4489 - 9281 - 16
You can reach me Monday-Friday from 7.00 a.m. to 6.00 p.m. and Saturday from 9.00 a.m. to 4.00 p.m.

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We will be happy to advise you:

As a passionate manufacturer, we have been producing garden ideas made of glass and metal in Apen for over 40 years. We want your garden to be your absolute favorite place where you feel at home at all times. That's why we are at your side from the initial consultation through to installation - for greenhouses, pavilions, conservatories and more.

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One product, many possibilities.
Wir setzen auf persönliche Beratung für lange Freude an Ihrem Gartenprojekt.

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Customer Service Jan Weber

I will be happy to advise you:

+49 4489 - 9281 - 16

Jan Weber

+49 4489 - 9281 - 16

You can reach me Monday-Friday from 7:00 to 18:00 o'clock and Saturday from 9:00 to 16:00.

You are also welcome to send us an e-mail to or book a consultation appointment.