Artificial stone For Garden XXXL-01

Large residential and commercial properties contain utility infrastructure that exceeds the coverage capability of any XL model: commercial septic tank covers with hatches ø 100–135 cm, DN1000/DN1200 concrete manhole shafts with frame diameters ø 110–135 cm, ground-level transformer cabinet housings ø 100–130 cm, large pump station access covers, tall well casings, and above-grade utility clusters. These objects require both extreme diameter (> ø 90 cm) and significant height clearance (> 26 cm) — conditions no XL model can satisfy.

XXXL-01 resolves this with the absolute maximum parameters in the GARTENDEK system: ø 140 cm interior coverage, 175 × 150 cm footprint, and ≈50–55 cm effective internal height at the peak. It is the only model capable of covering objects wider than ø 90 cm or taller than ≈20 cm.

The height advantage is critical. XL models (23–26 cm) are flat slabs concealing only low-profile objects. XXXL-01’s 60 cm peak height — the absolute lineup record — accommodates equipment up to ≈50 cm tall: tall pump housings, above-grade transformer cabins, protruding well casings, and stumps extending well above ground level. This is a fundamentally different class of concealment task.

Beyond concealment, XXXL-01 serves as a landscape design anchor at property scale — a defining 175 × 150 × 60 cm boulder that replicates a large naturally embedded glacial erratic in parks, hotel gardens, commercial campuses, and residential estates. At this scale, the stone becomes an architectural element rather than merely a utility cover.

Natural boulders of comparable dimensions weigh 3,000–4,000 kg and require a crane. Budget plastic covers are not structurally viable at 175 cm span. In the EU segment «ready-made decorative hollow stone ø ≥ 130 cm, EU production» — there are no direct competitors. XXXL-01 occupies a monopoly position.

The XXXL-01 is a massive hollow shell with an asymmetric multi-peaked boulder profile — 175 × 150 cm at the base (ratio 1.17:1), rising from approximately 35 cm at the lowest edge through ≈50 cm at the intermediate zone to 60 cm at the central peak. The interior provides a usable coverage diameter of ≈140 cm — the absolute maximum in the GARTENDEK range — with ≈50–55 cm effective internal clearance at the highest point.

Installation takes 15–30 minutes (including unpacking, site assessment, and placement). Place the stone directly over the target object on any surface. No anchoring required, no foundation, no tools. No permanent changes to the site.

Transport and placement: minimum two people, three recommended — at 46.50 kg and 175 cm length, a minimum of two adults is required; three is strongly recommended for controlled, precision placement.

Equipment access: one person is sufficient — the stone can be tilted or one edge lifted by a single person for brief maintenance or inspection, then lowered back.

Wind anchoring is recommended — the 2.63 m² footprint at 60 cm height creates a significant wind-exposed surface area. Landscape anchoring stakes at the perimeter are recommended in exposed locations. However, the 46.50 kg mass provides substantial inherent resistance.

Delivery: large freight shipment — at 83.50 kg gross weight in a 1600 × 1920 × 820 mm crate, XXXL-01 ships as palletised freight, not a standard parcel delivery. Forklift or pallet truck access at the delivery point is strongly recommended. Delivery cost: €250.

Seasonal behavior is neutral. The fiberglass composite structure does not absorb water, does not expand or contract meaningfully with temperature changes, and tolerates a continuous operating range from −30 °C to +60 °C.

Base contact — the stone has a non-sealed base and rests directly on the ground surface. It is not hermetically sealed; natural micro air exchange between the interior cavity and the surrounding environment is possible through the ground contact zone.

The XXXL-01 is constructed from a multi-layer fiberglass composite (GFK) — the same class of material used in boat hull construction, chosen for its strength-to-weight ratio and long-term weather resistance.

The outer surface is a marble chip and marble powder gelcoat of the ISO/NPG class. The color is not painted, printed, or applied as a film. Natural stone chips and stone dust of different colors are mixed directly into the gelcoat compound during manufacturing. The color and grain are embedded in the material itself, producing a surface that ages gracefully rather than peeling, flaking, or fading.

At the XXXL scale (175 × 150 cm), the GFK construction provides the structural rigidity necessary to span this distance without sagging or warping — a critical engineering requirement that budget materials (HDPE, thin polyresin) cannot satisfy at this scale. The 46.50 kg shell weight reflects the reinforced, heavy-duty layup required.

The product is handcrafted (In Handarbeit gefertigt) — color and dimensional deviations of 3–5 cm are within normal range and contribute to the natural stone appearance.

Compared with typical alternatives:

Note: Budget plastic rock covers (HDPE / polyresin) are not manufactured at ø ≥ 140 cm. Structural rigidity of thin-walled plastic cannot span 175 cm without sagging. In the EU segment «ready-made decorative hollow stone ø ≥ 130 cm, EU production» there are no direct competitors. XXXL-01 occupies a monopoly position.

Maintenance is minimal. Clean occasionally with water and a soft brush. No sealing, repainting, or chemical treatment is ever required.

Commercial septic tank covers (ø 100–135 cm)

The primary XXXL-01 application. Multi-chamber and industrial-grade systems with single-lid hatches ø 100–135 cm. The 175 × 150 cm footprint masks the entire installation zone — hatch, frame, gravel drainage surround, and disturbed soil. ø 140 cm clearance accommodates the largest residential and light-commercial inspection hatches. XXXL-01 is the only model in the range with this capability.

DN1000/DN1200 concrete manhole shafts

Inspection chambers with frame outer diameters ø 110–135 cm. Common in driveways, utility corridors, and entrance areas of commercial properties. XXXL-01 is the only model with sufficient clearance for DN1000/DN1200.

Ground-level transformer cabins

Low-profile electrical distribution transformer housings ø 100–130 cm. The 60 cm height accommodates taller above-grade housings that flat XL models (23–26 cm) cannot cover.

Large pump station housings

Above-grade pump station covers ø 100–130 cm for sewage lift stations, irrigation booster pumps, and large commercial water supply systems.

Large water meter and utility chambers

Commercial water metering chambers ø 100–120 cm. Gas valve chambers and major service entry points.

Very large tree stumps (ø 100–135 cm)

The 60 cm height covers stumps that protrude significantly above ground. The 2.63 m² footprint masks both the stump and the disturbed root zone surrounding it.

Large water feature infrastructure

Above-grade pump and filter housings for large ponds, lake aeration systems, and fountain installations.

Landscape design focal boulder

175 × 150 × 60 cm creates a defining landscape element at property scale. Replicates a large glacial erratic boulder.

Municipal utility concealment

Public spaces, parks, and green infrastructure where large-scale utilities must be aesthetically concealed.

Commercial property landscaping

Hotels, resorts, office campuses, hospitals — where technical infrastructure must be fully concealed in visible garden areas.

The XXXL-01 is the absolute flagship of the GARTENDEK range — the only model in the XXXL category. All three key parameters are lineup records: ø 140 cm, footprint ~2.63 m², height 60 cm.

Comparison with nearest models:

Key differentiators vs XL-02: ø: 140 vs 90 (+56%); footprint: 2.63 vs 1.63 (+61%); height: 60 vs 26 (+131%); weight: 46.50 vs 23.50 (+98%); price: €907.35 vs €551.89 (+64%). XXXL-01 is not a «bigger XL» — it is a fundamentally different class of product.

Selection logic: Objects ø ≤ 80 cm and H ≤ ~20 cm → XL-01 or L-01. Objects ø ≤ 90 cm and H ≤ ~20 cm → XL-04 or XL-02. Objects ø > 90 cm and/or H > 26 cm → XXXL-01 — the ONLY option.

Does the XXXL-01 look realistic at this massive scale?
Yes. The surface is real marble chips/powder in ISO/NPG gelcoat (not paint). The multi-peaked 3D profile and 175 × 150 cm scale replicate a glacial erratic.

How many people are needed for installation?
Minimum two adults, three recommended. Installation takes 15–30 minutes. For daily access, one person can tilt/lift one edge.

What is the maximum object size it can cover?
Interior coverage diameter is ø 140 cm, with ≈50–55 cm effective clearance at the peak.

How is delivery handled?
Palletised freight: 83.50 kg gross in a 1600 × 1920 × 820 mm crate. Forklift/pallet truck access recommended. Delivery cost €250.

Will it blow away in strong wind?
46.50 kg gives strong resistance, but anchoring stakes are recommended in exposed locations due to 2.63 m² at 60 cm height.

What is the difference vs XL-02?
XXXL-01 covers objects wider than ø 90 cm and/or taller than 26 cm — impossible for XL models. XL-02 is the largest flat XL slab for objects within ø 90 cm and low height.

Can I step on it?
Yes. Static load capacity is 150 kg (gradually applied).

Is it available in different colors?
Yes — Gray and Red.

Where is it manufactured?
Manufactured in Italy and dispatched from Slovenia (EU) by VSDN d.o.o.