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- GF-S Ø 19 mm
- Profiles
- GF-S profile
GF-S profile
https://leanproducts.eu/shop/gf-s-profile-348 https://leanproducts.eu/web/image/product.template/348/image_1920?unique=f20c9d2Anodised Ø 19 mm aluminium tube from the Green Frame GF-S series: light (0.20 kg/m) for frames, dividers, guards and small structures, combinable with GF-N. 4000 mm bar or cut to length.
Green Frame · GF-S Ø 19 profiles
GF-S profile: Ø 19 mm aluminium tube for light structures
The Ø 19 mm Green Frame tube: it weighs 0.20 kg/m, little more than half the GF-N, and is used where the structure needs to be light and slim. You use it for light frames, dividers, guard bars, small trolleys and mechanisms, even within a GF-N structure thanks to the mixed connectors.
Why choose it
Ultra-light
0.20 kg/m: structures you move by hand and mechanisms with little moving mass.
Small footprint
The 19 mm diameter leaves more room for parts, hands and tools.
Combines with GF-N
Mixed 90°, parallel and cross connectors join it to Ø 28 and Ø 43 tubes.
Complete range
Inner and outer connectors, 45°, rotating, sliding and braces, all for Ø 19.
Choose it if…
- The structure carries light loads and needs to be slim.
- You are building dividers, guard bars or small frames.
- You want to add light parts to a GF-N structure.
Choose another solution if…
- The structure has to carry shelves or workstation loads: GF-N profile →
- You need a stiffer Ø 19 tube: GF-S Hard profile →
- You want a slot for accessories on the Ø 19 tube: GF-S profile with C6 slot →
Not sure which one to choose? Use the Green Frame quick guide →

Application example
GF-S is used where GF-N would be oversized:
- Dividers and bars for guards and gates
- Small frames and supports on GF-N workstations
- Light mechanisms and moving parts
Most used connectors
With the 45° brace you stiffen 90° joints between Ø 19 tubes.
How to combine it
GF-S works well together with the other series:
On GF-N and GF-G structures
With mixed connectors you attach a Ø 19 tube to a Ø 28 or Ø 43 upright: at 90°, in parallel or crosswise.
Telescopic
The GF-S tube slides inside the GF-N Hard profile: for adjustable uprights.
Feet
With the dedicated M6 threaded insert you fit feet on the Ø 19 tube.
For short spans and light loads GF-S is enough; where the structure carries weight, use GF-N.
The LeanProducts service
From drawing to finished structure, with a single point of contact:
Design and load calculation
We start from your sketch or dimensions: we choose profiles and connectors and check spans, joints and loads.
Cut to length
We cut the profiles in our workshop to the lengths in the design, ready to assemble.
Kit or assembled structure
You receive the kit with the cut parts and the list of components, or the structure already assembled.
Spare parts and modifications
When the process changes we supply components and new cuts to modify or extend the structure.
Send us a sketch, a photo or the overall dimensions: we will reply with codes, quantities and cut lengths.
Technical data

| Specification | Value |
|---|---|
| Part number | GFF-400 |
| Series | GF-S, Ø 19 mm tube |
| Diameter | Ø 19 mm |
| Length | 4000 mm bar or cut to length |
| Weight | 0.20 kg/m |
| Material and finish | Anodised extruded aluminium |
| Moment of inertia | Ix = Iy = 0.27 × 10⁴ mm⁴ |
| Section modulus | Zx = Zy = 0.28 × 10³ mm³ |
| Suitable connectors | GF-S Ø 19 connectors; mixed GF-S with GF-N/GF-G |
| End caps | GF-S inner end cap GFA-403 |
| Feet | M6 threaded insert GFN-E07 |
The permissible load depends on span, profile orientation and joints: send us dimensions and weights and we will check the structure.
Related products
Not sure which profile to use?
Send us a sketch of the structure and the weight it has to support: we will tell you the profiles, connectors and cut lengths.
Specifications
| Length | 4000 |
| Material | Anodised extruded aluminium |
| Weight | 0.20 kg/m |
| Tags | |
|---|---|
| Tags |
SUS
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When loads are light and size and weight matter: dividers, guard bars, small frames, supports, mechanisms. For uprights and cross members of workstations and shelving, use GF-N Ø 28.
The moment of inertia is 0.27 × 10⁴ mm⁴ against 1.16 × 10⁴ for GF-N: about a quarter. This is why GF-S suits short spans and light loads.
With the mixed connectors: 90° outer GF-S with GF-N/G, parallel and cross. This way you attach Ø 19 tubes to Ø 28 or Ø 43 uprights without adapters.
Outer and inner 90°, inner 45°, corner, cross, parallel, rotating and sliding connectors, plus the 45° brace to stiffen joints. They are all specific to the Ø 19 tube.
Yes: GF-S slides inside the GF-N Hard profile. This way you make height-adjustable uprights with two tubes from the system.
With the M6 threaded insert for GF-S in the end of the tube. If you need an M8 foot screwed in directly, there is the GF-S Hard profile, whose end can be threaded M8.
The GF-S profile is the basic Ø 19 tube. The one with C6 slot adds a slot for slot nuts, hooks and accessories. The Hard has a thick wall, almost double the moment of inertia and an M8 threadable end for feet. The W joins two tubes into a 44 mm wide profile, more than 10 times stiffer when mounted upright. F35 and F22 have a flat flange for labels, tags and light supports.
The GF-N Ø 28 is the standard for workstations, flow racks and trolleys. The GF-S Ø 19 weighs about half as much (0.20 kg/m versus 0.37) and is for light frames, dividers, guards and small mechanisms. The GF-G Ø 43 is for uprights and cross members that have to carry a lot: over a 1000 mm span it supports 851 N at the centre versus 195 N for the GF-N, for the same deflection. It is often worth mixing them, for example GF-G uprights and GF-N cross members joined by mixed connectors.

