Security screens and counters
Flush-fit external pay window
The flush-fit window passes goods from the secure side of an external wall to the customer without protruding from the face of the building. It was designed for garage forecourts and 24-hour pharmacies, where the counter has to work after the doors are locked.
- Use
- External wall, under a canopy
- Glazing
- BS EN 356 P4A
- Finish
- RAL 7016 grey as standard

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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Flush fit pay window
Specification
What you are getting
- Flush draw transfer unit under a physical attack resistant screen to BS EN 356 P4A
- Audio system with induction loop built in
- Drawer locks from the inside, with a removable cover that leaves a clear counter top
- Standard width, with bespoke glazed heights and side fixed panels available
- Needs a 13amp socket within one metre, and is best installed under a canopy
Applications
Where it gets used
- Garage forecourts
- 24-hour pharmacies
- Late-night serving hatches
- Prescription collection
Where is a flush-fit pay window used?
At garage forecourts, 24-hour pharmacies and late-night serving hatches, where staff serve through an external wall after the doors are locked. The unit sits flush with the face of the building.
What does it need on site?
A 13amp socket within one metre of the unit. It is best installed under a canopy.
How is it secured when it isn't in use?
The drawer locks from the inside, and a removable cover leaves a clear counter top on the staff side.
Can the size be changed?
The width is standard. Bespoke glazed heights and fixed side panels are available.
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.