01Compact
FODIS Box 400x800 D400
Modular underground manhole system with three cover types, adjustable depth, and D400 loading classification
- Clear dimensions
- 400 × 800 mm
- Body heights
- 3 (600 / 825 / 1050 mm)
- Load class
- D400
- Modular body
- Adjustable depth
- 75 mm step
- D400 load class
- Hot-galvanized
- Three cover types
- Four locking mechanisms
- EU patented
- Modular body
- Adjustable depth
- 75 mm step
- D400 load class
- Hot-galvanized
- Three cover types
- Four locking mechanisms
- EU patented
Two formats. One system.
Pick the footprint that fits the project
Both formats share the same modular construction, locker family and cover materials — so specifying becomes a question of clear dimensions, not redesign.
02Large format
FODIS Box 880x1120 D400
Large-format modular underground manhole system with two-piece covers, adjustable depth, and D400 loading classification
- Clear dimensions
- 880 × 1120 mm
- Body heights
- 3 (600 / 825 / 1050 mm)
- Load class
- D400
Engineering
Six reasons this works underground
Every detail is chosen for installation crews, project planners and asset owners — not catalog optics.
- 01
Three cover types
Choose ductile iron (heavy-duty), concrete, or paveable covers — all height-adjustable, all metal parts hot-galvanized.
- 02
Modular body
Flexible construction, easy to customize depth on site. Smallest step to change depth is 75 mm.
- 03
Cluff hole element compatible
Possibility to add 2 types of cluff in hole element (stepped grommet) for cable entry.
- 04
D400 reinforced frame
D400 execution contains a double frame in the middle with galvanized metal, certified for heavy-traffic loading.
- 05
Four locker mechanisms
Available with hex, inner hex, LICK-LOCK, or COLT/TELNET locking — or no-locker option.
- 06
Anti-slip base
Reinforced frame and anti-slip base plate included as standard.
Modular construction
Every layer designed to work as one
Cover, frame, body sections and base plate are independently specifiable, ship flat and assemble on site without specialist tooling. Depth is tuned in 75 mm steps — no bespoke fabrication, no surplus inventory.
- mm depth step
- 75
- body heights
- 3
- locker mechanisms
- 4
At a glance
Side-by-side comparison
The essentials for early-stage specification — full specs follow below.
CompactFODIS 400x800 D400
Large formatFODIS 880x1120 D400
Clear dimensions
400 × 800 mm
880 × 1120 mm
External dimensions
580 × 980 mm
1060 × 1300 mm
Loading class
D400
D400
Cover types
3 (ductile iron / concrete / paveable)
3 (ductile iron / concrete / paveable, 2-piece)
Body heights
3 (600 / 825 / 1050 mm)
3 (600 / 825 / 1050 mm)
Configurations
Built around your site, not the catalog
Mix covers and locking mechanisms across both formats. All metal parts are hot-galvanized.
- Ductile iron cover
- Concrete cover
- Paveable cover
- LICK-LOCK locking
- COLT/TELNET locking
- Hex locking
- Hot-galvanized
- 2-piece covers
Technical data
Full specifications
Combined specification matrix for both FODIS Box formats. Refer to the individual datasheets for full variant tables.
| Specification | FODIS 400x800 D400 | FODIS 880x1120 D400 |
|---|---|---|
| Clear height — variant 1 | 600 mm | 600 mm |
| Clear height — variant 2 | 825 mm | 825 mm |
| Clear height — variant 3 | 1050 mm | 1050 mm |
| External height (ductile iron, 600 clear) | 720 mm | 720 mm |
| External height (ductile iron, 825 clear) | 945 mm | 945 mm |
| External height (ductile iron, 1050 clear) | 1170 mm | 1170 mm |
| External height (concrete, 600 clear) | 770 mm | 785 mm |
| External height (concrete, 825 clear) | 995 mm | 1010 mm |
| External height (concrete, 1050 clear) | 1210 mm | 1235 mm |
| External height (paveable, 600 clear) | 815 mm | 825 mm |
| External height (paveable, 825 clear) | 1040 mm | 1050 mm |
| External height (paveable, 1050 clear) | 1265 mm | 1275 mm |
| Loading classification | D400 | D400 |
| Frame construction | Double frame in the middle with galvanized metal (D400 execution) | Double frame in the middle with galvanized metal (D400 execution) |
| Base plate | Reinforced frame, anti-slip | Reinforced frame, anti-slip |
| Stepped grommets per hole level | 6 | — |
| Cover configuration | — | 2-piece (matches large footprint) |
| Stepped grommets per manhole | — | 6 (supplied, not assembled) |