Exterior Drainage / SS Double Slot
SS Double Slot
The same polymer concrete channel body as Single Slot, fitted with a twin-slot stainless steel grating that roughly doubles the open inlet area - built for sites where flow capacity matters as much as appearance.
Product certification is in progress and CE is not claimed. Brochure language should be read with the website compliance page.
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Polymer concrete
EN 1433 · A15–E600 · 150×150 mm
SS Double Slot
Stainless double-slot grate
Representative model · not to scale
Construction
Inside the channel
FIG. 01 CHANNEL CROSS-SECTION
WTI · NOT TO SCALE
A polymer concrete body in 1000mm sections, fitted with a matched grating. The body carries the load; the grate is the inlet. Published sizes run 55×100, 100×100, 150×150, 200×200 and 300×300mm, load class A15 through E600.
Load class
EN 1433 classifies channels from A15 to F900. WTI's exterior polymer concrete range is published A15, B125, C250, D400 and E600.
Selected class
C250
250 kN · Heavier vehicular
Kerbside and road-edge runs, basement ramps and service yards carrying heavier commercial traffic.
Specification
| Material | Polymer Concrete |
|---|---|
| Standard | EN 1433 |
| Length | 1000mm |
| Size options | 55×100, 100×100, 150×150, 200×200, 300×300mm |
| Load class | A15, B125, C250, D400, E600 |
| Water absorption | Negligible |
| Grating material | Stainless Steel or Ductile Cast Iron |
How to specify
Stainless double-slot grate
The same polymer concrete channel body as Single Slot, fitted with a twin-slot stainless steel grating that roughly doubles the open inlet area - built for sites where flow capacity matters as much as appearance.
EN 1433
Manufactured to comply with EN 1433 - Linear Drainage Channels. Third-party certification is in progress.
Polymer Concrete
Polymer Concrete - produced in-house at the Jaipur plant.
• The range
Compared to its siblings
Against Single Slot, Double Slot gives up some of that hairline discretion for meaningfully more inlet area - the right trade where drainage performance is the priority. Against SS Trianglo Slot, it's the more conventional grate geometry; Trianglo Slot is the choice where the grate pattern itself is part of the finished look.
SS Double Slot
Vs
SS Single Slot
Stainless double-slot grate
Stainless single-slot grate
| SS Double Slot | Attribute | SS Single Slot |
|---|---|---|
| Stainless, twin slot | Grate | Stainless, single slot |
| Twin slots - roughly 2× open area | Inlet | One continuous slot |
| Two parallel slot lines | Sightline | Narrowest in the range |
| Higher-volume hardscape | Duty | Discreet pedestrian / driveway |
| Polymer concrete, 1000mm | Channel | Polymer concrete, 1000mm |
| A15–E600 | Load class | A15–E600 |
| EN 1433 | Standard | EN 1433 |
| Parking, ramps, campus runs | Specify when | Hairline driveway and plaza lines |