- New
Akuvox R20A thick on-wall mounting box in black is a 143 × 84 × 22 mm box the R20A door phone mounts onto, so the station stands off the wall on a solid black base instead of sitting on the flat bracket alone.
- ✓Black box, 143 × 84 × 22 mm (H × W × D)
- ✓Made for the Akuvox R20A single-button door phone
- ✓Keyhole fixing slots and a large opening in the back for cables
- ✓Akuvox placement: camera centre 1500 mm above the ground
A deeper base for the R20A.
Black, 22 mm deep, surface mounted.
The AK-R20ONWALLBT is the thick version of the Akuvox R20A on-wall mounting box. It sits between the wall and the door phone, matching the R20A's footprint at 143 × 84 mm and adding 22 mm of depth behind the station.
Mounting box only.
This is the box on its own. The R20A door phone, its wall bracket and fixings, and any rain hood are separate items.
- Akuvox R20A thick on-wall mounting box (black)
- Akuvox R20A door phone
- Wall fixings to suit the surface
- Optional: R20A on-wall rain hood for an exposed entry
Room behind the station.
The box gives the R20A a 22 mm deep black base on the wall, with a large opening in the back for the cable entry.

The box
Sized to the R20A.
At 143 × 84 mm the box matches the outline of the R20A door phone, so it reads as part of the station once it is mounted.
Keyhole slots for the wall screws, a large opening in the back for the cables, and tabs at the base.
How it works
Box first, then the door phone.
01
Plan the height
Akuvox's placement drawing puts the camera centre 1500 mm above the ground, with the bottom of the panel at 1375 mm.
02
Fix the box
Bring the cables through the rear opening and screw the box to the wall through its keyhole slots.
03
Mount the R20A
Connect the door phone and mount it onto the box, following the R20A on-wall guide.
At a glance
Key specs — AK-R20ONWALLBT
Show all specifications
- Type
- On-wall (surface) mounting box, thick version
- Colour
- Black
- Compatible with
- Akuvox R20A door phone
- Box size (H × W × D)
- 143 × 84 × 22 mm
- Depth at the base tabs
- 31 mm
- Mounting height
- Camera centre 1500 mm above the ground; panel bottom at 1375 mm
- Warranty
- Australian warranty
- Brand
- Akuvox
- Reference
- AK-R20ONWALLBT
Box
- Size (H × W × D)
- 143 × 84 × 22 mm
- Depth at the base tabs
- 31 mm
- Colour
- Black
- Cable entry
- Large opening in the back
Installation
- Mounting
- Surface (on-wall)
- Wall fixing
- Keyhole slots
- Mounting height
- Camera centre 1500 mm above the ground; panel bottom at 1375 mm
- Compatible door phone
- Akuvox R20A
Pair it with
Goes with the R20A
Door phone
Akuvox R20A
The single-button SIP video door phone this box is drawn for, in silver or black.
Alternative
R20A in-wall kit
A flush-mounting box and decorative panel for setting the R20A into the wall instead.
Downloads
Datasheets and guides
Compliance certificates and technical documents are available on request for tenders and installers — send an enquiry.
Answers
Common questions
Which door phone does it fit?
The Akuvox R20A. The Akuvox drawing for this box names the R20A as the applicable model.
How big is it?
143 × 84 × 22 mm (H × W × D), or 31 mm deep measured at the fixing tabs on the base.
How do the cables get in?
Through a large opening in the back of the box, so cables can come straight out of the wall behind the door phone.
How high should it go?
Akuvox's placement drawing puts the camera centre 1500 mm above the ground, with the bottom of the panel at 1375 mm.
Is the door phone included?
No. This is the mounting box only; the R20A door phone is a separate item.
What colour is it?
Black.
A tidy surface install for the R20A.
Pick the thick box when the R20A is going on the wall surface and you want a solid black base behind it. For a recessed finish, the R20A in-wall kit sets the station into the wall instead.
- Colour
- Black
- Brand
- Akuvox
- Mounting
- Surface (on-wall)
- Product Type
- On-wall mounting box
- Model
- R20A thick on-wall mounting box
- Compatible with
- Akuvox R20A
- Box Size
- 143 × 84 × 22 mm (H × W × D)