Transfer units and hatches
Electronic bulk transfer unit (EBTU)
The EBTU is for things too big for a tray. The two doors are electronically interlocked, so the secure side is never open to the public side, and the unit can be built into a wall or sat on a counter.
- Doors
- Electronically interlocked
- Resistance
- Ballistic, BS 5051 G2 S86
- Mounting
- Wall or counter

Tech sheets
The tech sheet
Read them here, or take the PDF. Each one carries the drawing, the dimensions and the options.
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Electronic bulk transfer unit EBTU
Specification
What you are getting
- Doors electronically interlocked, so both are never open together
- Manufactured to ballistic resistance BS 5051 G2 S86
- Wall or counter mounted, in left or right hand versions
- Brushed stainless steel door on the customer side, painted mild steel texture elsewhere
- Requires a 13amp socket
Options
- Bespoke interiors available
Applications
Where it gets used
- Cash offices
- Bank and building society counters
- Custody and property stores
- Pharmacy and dispensary
What is a bulk transfer unit for?
Passing items too big for a counter tray through a wall or counter. The two doors are electronically interlocked, so the secure side is never open to the public side.
What resistance is the EBTU built to?
It is manufactured to ballistic resistance BS 5051 G2 S86.
Can it be built into a wall?
Yes. It can be wall or counter mounted, in left or right hand versions, with bespoke interiors available.
Does it need power?
Yes, a 13amp socket for the electronic interlock.
Why MerFen
One firm makes it, fits it and keeps it working
Most installers fit what a manufacturer sells them. We make the physical side ourselves, so the specification starts with the site.
Request a free quote- In-house
Made in our own workshop
Screens, counters, doors, gates and hatches are fabricated in Edenbridge, to the sizes the building actually has.
- One team
Nobody passes the job on
The same people survey the site, draw the specification, make the steel, fit it and come back to service it.
- Approved
Accredited and partnered
SafeContractor accredited, with Hikvision VASP, Axis, Hanwha Vision and Paxton partner status behind the electronic side.
- After handover
Covered once it is in
Twelve months on our installation, three years on Hikvision hardware, and annual service contracts for the systems we install.