COSMOS Marte S vs. Marte L – Which Model to Choose and Why

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The COSMOS Marte range of mobile scaffold towers is among the most thoroughly engineered products of its kind on the European market. They are manufactured by Italian company COSMOS Srl, with more than forty years of production history, and their construction complies with standard UNI EN 1004-1/2:2021 in load class 3.

The Marte range comes in two fundamental variants: Marte S (narrow) and Marte L (wide). Both models are available in a range of height configurations and in the Comfort version. If you are unsure which variant suits your operation, this article will make the decision straightforward.

The Primary Parameter: Width as the Starting Point

The most important distinguishing parameter is the frame width — and consequently the working platform width:

Marte S: internal frame width 0.74 m (working platform approximately 0.74 m) Marte L: internal frame width 1.35 m (working platform approximately 1.35 m)

The platform length is 1.8 m for both variants.

This width directly determines:

• Whether the tower will pass through a standard doorway
• How many people can work comfortably on the platform simultaneously
• The maximum height achievable in a given configuration
• How easily the tower can be manoeuvred in confined spaces

Marte S — Narrow Variant

Marte S is designed for use in spaces where width is a constraint, or for situations where one person works alone and platform spaciousness is not the priority.

Marte S specifications (indicative, configuration-dependent):

• Platform width: 0.74 m
• Platform length: 1.8 m
• Load class: 3 (200 kg/m²)
• Maximum platform height (indoors): depends on frame configuration
• External width: approximately 0.85–0.90 m (accessory-dependent)
• Certification: UNI EN 1004-1/2:2021

Key advantage of Marte S: ServoTech included as standard Marte S is equipped as standard with the ServoTech braking system. This patented COSMOS system automatically engages the castor locks when the user steps onto the bottom rung of the internal access ladder. Once the user is on the tower, it cannot move — and the castors are released only after the user has fully descended.

ServoTech on Marte S is not an optional extra — it is part of the standard specification. On Marte L, ServoTech is an optional accessory.

When to choose Marte S:

• You need to pass through a standard doorway (width up to ~90 cm)
• You work in narrow corridors, lift shafts, or confined spaces
• One person works on the platform
• The ServoTech safety system is a priority and you don't want to pay extra for it
• Residential or office environments where space is limited

Marte L — Standard (Wide) Variant

Marte L offers a substantially larger working platform and is designed for situations where comfort, load capacity, and the ability to accommodate two people matter more than clearance through narrow spaces.

Marte L specifications (indicative, configuration-dependent):

• Platform width: 1.35 m
• Platform length: 1.8 m
• Load class: 3 (200 kg/m²)
• Maximum platform height (indoors): greater configurations than Marte S
• External width: approximately 1.50 m (accessory-dependent)
• Certification: UNI EN 1004-1/2:2021

The working area of Marte L (1.35 × 1.8 m = 2.43 m²) is almost double that of Marte S (0.74 × 1.8 m = 1.33 m²). The practical difference in working comfort is significant.

When to choose Marte L:

• Two people work on the platform simultaneously
• You need more space for tools, materials, or movement
• You work in industrial buildings or on facades where width is not a constraint
• You need taller configurations (Marte L reaches greater heights in standard assemblies)
• Industrial operations with daily intensive use

Comfort Version — What Does It Add?

Both ranges are available in the Comfort version, which adds:

Safe Parapets: a guardrail system whose components cannot be removed while the user is standing on the platform. This eliminates one of the most common sources of falls — dismantling the guardrail while exiting the platform.

SmartLock: an integrated lever system for castor locking. A single press of one lever simultaneously locks all four castors — fast, intuitive, and safe.

More ergonomic access: Comfort versions have adjusted internal ladder proportions for more comfortable ascent to greater heights.

We recommend the Comfort version for industrial operations where the scaffold is used by multiple users in rotation, and for situations where the speed and intuitiveness of safety features are critical.

Comparison Table: Marte S vs. Marte L

Parameter | Marte S | Marte L -------------------------|----------------------|---------------------- Platform width | 0.74 m | 1.35 m Platform length | 1.8 m | 1.8 m Platform area | ~1.33 m² | ~2.43 m² Load class | 3 (200 kg/m²) | 3 (200 kg/m²) ServoTech | included as standard | optional accessory Safe Parapets (Comfort) | yes | yes SmartLock (Comfort) | yes | yes External width (approx.) | ~0.85–0.90 m | ~1.50 m Door clearance | yes (standard door) | no Persons on platform | 1 (comfortably) | 1–2 Max. height (indoors) | lower configurations | higher configurations Certification | UNI EN 1004-1/2:2021 | UNI EN 1004-1/2:2021 Typical use | indoors, confined | industry, facades, | spaces, 1 person | 2 persons

Quick Decision Guide

Do I need to pass through a standard doorway? → Yes → Marte S

Am I working alone or will two people be on the platform? → Alone → Marte S → Two people → Marte L

Do I want ServoTech included in the base price without extra cost? → Yes → Marte S

Am I working in an industrial building or on a facade? → Yes → Marte L (or Marte L Comfort)

Do I need Safe Parapets and SmartLock? → Yes → Marte S Comfort or Marte L Comfort

Still unsure? Contact us and tell us your working height, number of users, and space constraints — we'll recommend a specific configuration including any accessories.