Precast plant
Boxes are placed into a mould during production of wall and floor elements. Position, fixing to reinforcement or mould face, handling and demoulding are reviewed together.
Concrete & Precast Boxes
Concrete and Precast Electrical Installation Boxes
Models for cast-in-situ formwork and factory-cast precast elements. Review positioning, fixing, conduit entries and concrete cover against the element drawing before quotation.
Technical family
Two concrete jobs, one review path
Precast plant and cast-in-situ work use different fixing logic. Tell us which process you are working in before choosing a model.
Cast-in-situ work
Boxes are fixed to formwork or held against a counter bearing. Attachment and conduit clearance relative to the reinforcement are the first questions.
Model records
Concrete and precast box range
Box records are shown first; related accessories are listed separately below. Technical fields follow the current model record.
Concrete & Precast Boxes
ETM780S
ETM780S
Type: Box · Size / Depth: Ø71 mm body; depth 60.5 mm; drawing envelope 71 × 103 × 60 mm · Inlets: 1 × 2×Ø20 mm ETM793S inlet,…
Concrete & Precast Boxes
ETM784S
ETM784S
Type: Box · Size / Depth: Ø71 mm body; depth 60.5 mm; drawing labels 71 × 104 × 75 mm; 32.5 mm side label · Inlets: Plugged ETM788S…
Concrete & Precast Boxes
ETM812S
ETM812S
Type: Box · Size / Depth: Drawing envelope 71 × 103 × 76 mm; 30 mm side label · Inlets: 2 × 2×Ø20 mm plugged inlets · Material:…
Concrete & Precast Boxes
ETM850S
ETM850S
Type: Box · Size / Depth: Outer Ø73.5 mm / inner Ø56.5 mm; CC 60 mm; overall height 123 mm; drawing labels 102.77 mm, 70.75 mm, 32 mm,…
Concrete & Precast Boxes
ETM931S
ETM931S
Type: Box · Size / Depth: Outer Ø75 mm / inner Ø57.5 mm; CC 67 mm; overall height 172 mm; body height 131.4 mm; side dimension 85.4 mm…
Concrete & Precast Boxes
ETM834S
ETM834S
Type: Box · Size / Depth: Ø83 mm body; depth 88.5 mm; CC 70 mm; H=83 mm · Inlets: 6 × Ø20 mm conduit inlets · Material: PP
Related accessories
Related accessories
These accessory records are listed separately from the seven concrete box models. Use the exact model page for the current product record.
The two accessory records are kept outside the concrete box model cards and are listed in the related accessories section.
Review checklist
What we check before recommending a box
- Position and tolerance in the element
- Fixing method and whether a counter bearing is available
- Conduit entry size, direction and relation to reinforcement
- Concrete cover and box orientation
- Protection during casting
- Demoulding and handling
From drawing to series supply
A controlled route into production
A trial element gives the plant a real installation result before a series decision is made.
- 01 · Drawing review
Map the element
Element type, wall thickness, reinforcement layout, electrical positions and fixing method.
- 02 · Sample casting
Test the process
Trial quantity for an actual element, not an assumption on paper.
- 03 · Confirmation
Lock the details
Confirm position, fixing, entries and protection against the trial result.
- 04 · Series supply
Plan the line
Match packaging units and call-off schedule to the production plan.
FAQ
Concrete project questions
Answers stay at process level until the exact model and plant setup are confirmed.
Can the boxes be fixed without a counter bearing?
Confirm the model-specific fixing method against the supplied product record and project drawing. Send the mould setup and we will confirm which box suits it.
Where should conduit entries sit relative to reinforcement?
That depends on concrete cover and the reinforcement layout. We work through it at drawing review.
How is the box protected during casting?
Construction protection keeps concrete and slurry out. Standard versus separately ordered protection is confirmed per model.
Can we test on one element first?
Yes. A trial quantity for one element is the normal first step for a precast project.
Next step
Send your element drawing
Element type, wall thickness, reinforcement layout, electrical positions, available fixing method and annual volume.