Extention Kit 50cm
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Extention Kit 50cm

Regular price150,00€
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Tax included. Shipping calculated at checkout.

Color
Scratch post
  • Award-winning design
  • Free shipping — delivered to you within 3–5 days
  • 100% natural materials
  • Handcrafted in Europe

The H-Tree Extension Kit adds an additional level to your cat tree – functional, aesthetically consistent, and true to design. Created for evolving living spaces and growing cats, the extension integrates seamlessly into the existing system.

A composition of solid scratching posts, a spacious platform, and a precisely crafted felt topper creates new heights for climbing, resting, and observing – without disrupting the architectural flow.

Whether for young cats, expanded living space, or as an addition to a multi-cat home, the Extension Kit opens new possibilities without replacing your existing H-Tree. Easy to install, lasting in impact. And the design remains what it’s meant to be: reduced, functional, timeless.

👉 Compatible with H1, H2, and H3. Expand your space – and rethink design: "The H-Series".

Compatibility:
Easily expandable and fully compatible with models H1, H2, and H3. This allows your H-Tree to grow step by step, adapting perfectly to your needs.

Functional Elements:
Includes an additional platform, a soft felt topper, and two sturdy wooden scratching posts wrapped in natural sisal – creating more space, structure, and movement in the vertical dimension.

Easy Assembly:
Delivered with all necessary mounting materials and tools – ensuring a quick, stable, and intuitive expansion.

Dimensions

Total height: 50 cm
Width: 75 cm
Platform size: 65 × 32 cm

Materials

Platform & Support Structure:
Crafted from solid beech wood, finished in white or black lacquerrobust, durable, and dimensionally stable.

Topper:
Made from 100 % wool felt, available in white melange or black melange. As wool is a natural material, subtle color variations may occur – each piece remains unique.

Scratching Surface:
Made from 100 % natural sisal with a latex backing, available in natural or black. Since sisal is a natural fiber, tone and texture variations are part of its authentic character.

Components:
Includes one platform, one felt topper, and two scratching posts in your selected color combination.

Assembly Tools:
All required mounting materials and tools are included – ensuring a stable and straightforward assembly.

Assembly Instructions:
A detailed instruction manual in your local language is provided to make setup intuitive, smooth, and seamless.

H-Tree Studio GmbH
Holteistraße 14
10245 Berlin, Germany

Take a closer look – and discover what your H-Tree is made of.

To order free material samples, click here.

Sisal

Sisal embodies resilience. Harvested from the long, pointed leaves of the agave plant, its fibers are sun-dried and spun into a fine, durable yarn. Sisal carries the raw strength of nature — long-lasting and sturdy, it invites cats to sharpen their claws while its clean, natural texture brings a grounded warmth to any space.

Solid-Wood

Beech wood stands for permanence. Sourced from sustainable forestry in Europe, it combines strength with timeless aesthetics. This dense hardwood is durable and easy to maintain, while its warm tones blend harmoniously into any interior. A piece of nature that brings calm, comfort, and balance to your home.

Wool-felt

Wool felt brings softness. Made from pure new wool, it is breathable, temperature-regulating, and naturally water-repellent. Its quiet, tactile surface absorbs sound and creates spaces of calm. Certified according to OEKO-TEX® Standard 100, it is free from harmful substances — a safe, natural material for your home.

Animation des H-Tree Design-Kratzbaums – zeigt die präzise Verbindung aus lackiertem Echt-Holz und Metall, verdeutlicht das durchdachte Montagesystem für stabile Konstruktion und klare Form

Stability meets lightness

— -

Stability means safety — for your cat and for your home.

That’s why every H-Tree is secured to the wall with two discreet screws — stable like an architectural element, yet light in appearance.

The construction remains elegant, but uncompromising in safety.

Crafted from solid wood and durable sisal, the H-Tree is built to last — functional, enduring, and beautifully balanced.

Each platform supports up to 30 kg, making it ideal for multiple cats or particularly active climbers.

Design-Kratzbaum H-Tree H3 aus lackiertem Echt-Holz in Schwarz mit schwarzem Sisal vor Betonwand – modernes Wohnzimmer mit minimalistischer Einrichtung, Mann liest entspannt im Stuhl daneben

Exceptional design — for cats and humans alike

— -

Step into the world of H-Tree Studio — honored with the MUSE Design Award for exceptional form and function.

Our H-Trees are more than cat trees: they are modular design objects crafted from solid wood, sisal, and wool felt — created for cats who love to climb, rest, and observe their surroundings with pride, and for humans who value aesthetics and longevity.

Each H-Tree unites architectural clarity with handcrafted precision — a statement of mindful living and enduring design.

Animation der H-Tree Serie – Design-Kratzbäume H1 bis H4 aus lackiertem Echt-Holz mit natur- und schwarzfarbenem Sisal, zeigt alle Größen und Farbvarianten im Überblick

Flexible and adaptable

— -

Every cat is unique — and every space has its own character.

That’s why the H-Tree offers exceptional adaptability: you can add, replace, or adjust levels and colors as you wish.

Whether Black-Sisal, White-Beige, or Black-Beige — the H-Tree can be perfectly matched to your interior, growing alongside you and your cat.

The result is a truly individual piece that evolves over time — functional, versatile, and always refined.

Schwarzer Design-Kratzbaum H-Tree H3 aus lackiertem Echt-Holz mit schwarzem Sisal, neben Bücherregal und Sofa im modernen Wohnzimmer – schwarze Katze sitzt auf der oberen Plattform

More harmony within your space

— -

An H-Tree integrates seamlessly into your home, creating balance between freedom and closeness.

It gives your cat space to express independence, while remaining a shared element between you — a place where trust and observation meet.

Its vertical form makes efficient use of space without dominating it — like a quiet architectural object that radiates both calm and connection.

What others see in us.

★★★★★

The H-Tree looks even better in real life. I was a bit skeptical at first, wondering if our cat would actually use it. But after just two days, she was sleeping there all the time. The assembly was easy — even for someone like me who isn’t very handy. I’m really happy with it.

Lea K.

Berlin

★★★★★

Endless climbing fun!
My cat is absolutely thrilled with this cat tree! She’s constantly climbing up and down — it’s such a joy to watch her. The scratching posts are really sturdy, and I love that I can replace them once they wear out. So far, everything’s perfect — a fantastic product!

Frances F.

Potsdam

★★★★★

Looks great. Cat’s happy, I’m happy.

Lukas B.

Berlin

★★★★★

Our cats love the H-Tree!
We’re quite particular when it comes to furniture, so cat trees were never really an option — until we discovered H-Tree Studio. The design won us over instantly. We started with three platforms and later expanded with an extension kit to fit our high ceilings. It’s stable, easy to assemble, looks beautiful — and our cats absolutely love it!

Melanie K.

Berlin

★★★★★

Finally, a cat tree that fits our home!
Our cat Plobby spends a lot of time outdoors, but when she comes in, she needs her own space. With two small children, traditional cat trees just weren’t practical. The H-Tree is the perfect solution! It’s modern, space-saving — and Plobby loves it. She finally has a safe retreat — a wonderful decision for both us and our cat!

Lucia S.

Würzburg

★★★★

A great product — not cheap, but worth it.
For us, it was absolutely worth the investment — we were tired of constantly replacing cat trees. The craftsmanship is excellent, everything feels solid and stable. Definitely recommend it.

Karoline & Marco M.

Leipzig

★★★★

The tree is great, but the delivery was a bit delayed.
Everything else was perfect — excellent quality and beautiful design.

Daniel L.

Freiburg

★★★★★

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FAQs

Hier finden Sie Antworten auf die wichtigsten Fragen zu unseren Produkten und Services.

The H-Tree can be placed leaning against the wall, much like a ladder. For full stability and safety, however, we recommend securing it using the two designated mounting points. This ensures your H-Tree stays perfectly stable — even during energetic climbs and sprints.

The exact dimensions depend on which model you choose — from the compact H1 to the spacious H4. You can find all details regarding height, footprint, and recommended space directly on each model’s product page. This makes it easy to see how the H-Tree will fit seamlessly into your home.

Yes — every H-Tree supports up to 30 kg per platform, making it stable enough for large or multiple cats. To ensure each cat has plenty of space to climb and relax, we especially recommend the H3 or H4 models for multi-cat households.

For brick and concrete walls, the appropriate wall plugs and screws are already included in the delivery. For drywall, we recommend using special drywall anchors, as standard plugs may not provide sufficient hold. If you’re unsure, please contact us or consult your installer — this ensures that your H-Tree is mounted securely and safely.

Wood: wipe with a slightly damp cloth, then dry thoroughly.
Sisal: vacuum regularly; carefully trim any loose fibers — do not pull them.
Wool felt: vacuum or gently brush; treat stains locally with a mild wool detergent.

The lifespan of the sisal depends on how intensively and how often your cat uses the H-Tree. For some, the scratching elements remain in great condition for years, while more enthusiastic scratchers may wear them down sooner. To ensure lasting enjoyment, all sisal elements are replaceable. You can reorder and easily swap out individual parts at any time — without having to buy a new H-Tree. This way, your H-Tree remains a stable, aesthetic, and sustainable companion in your home.

The H-Tree is made from solid wood, sisal, and wool felt — deliberately designed without plush. Its clear, architectural form emerges from the harmony between natural materials and minimalist design. Designed in Berlin.

Yes — with the Extension Kit, you can add additional platforms. The maximum configuration is the H4, featuring four platforms. We don’t recommend exceeding this height to ensure lasting stability and safety.

Cats love having their H-Tree near windows or lookout points — places where they can observe, nap, and keep everything in view. Avoid spots exposed to drafts or dead ends — your cat will feel most secure in calm, open areas with a clear perspective.

Cats need to scratch — it’s a natural and important part of their behavior. By offering them sturdy and appealing scratching surfaces like the sisal elements of the H-Tree, you gently redirect their attention away from your sofa or carpet.

The H-Tree naturally invites exploration: its varied heights, soft wool felt surfaces, and durable sisal elements appeal to your cat’s natural instincts to play, climb, and scratch.
You can spark additional curiosity by placing her favorite toy or a few treats on the platforms.
Before long, the H-Tree will become her personal vantage point and place of retreat.

Depending on the model, the H-Tree weighs up to 25 kg and is securely packaged in a compact box for delivery to your home.
If a return is necessary, you can easily send it back within 14 days using standard shipping with common parcel services.
Detailed information can be found in our return policy.
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