- New
Akuvox R20K / R25K / R20B Black In-Wall Installation Kit — AK-R20KINWALLK-B
or 4 interest-free payments of $14.45 with
Akuvox R20K / R25K / R20B in-wall kit in black recesses a 185 × 84.5 mm R20K keypad, R25K or R20B multi-button door phone into the wall. It contains the flush-mounting box, the black flush-mounting bracket, wall fixings, Torx screws and the Torx wrench.
- ✓Flush-mounting box plus black 226 × 108 mm decorative frame
- ✓Fits Akuvox R20K, R20K-L, R25K and R20B (2–5 buttons)
- ✓Wall cut-out 207 × 89 × 40 mm (H × W × D)
- ✓Station locks in with two M4×15 Torx screws
Recess the keypad door phone.
Black frame, flush finish.
The AK-R20KINWALLK-B is the Akuvox flush-mounting kit for the 185 × 84.5 mm R20 family. The box goes into a 207 × 89 × 40 mm recess and the door phone locks into it with Torx screws, leaving a slim black border at the wall face.
Mounting hardware only.
Everything to flush-mount one R20K, R25K or R20B. The door phone and in-wall rain hood are sold separately.
- Flush-mounting box
- Flush-mounting bracket (black)
- 2 × M4×15 Torx screws
- 4 × ST4×20 screws and 4 plastic wall anchors
- Torx wrench
- Akuvox R20K, R20K-L, R25K or R20B door phone
- A 207 × 89 × 40 mm wall recess with cable entry
- Optional: R20K / R25K / R20B in-wall rain hood
Flush, neat and harder to tamper with.
A recessed station sits close to the wall face, hides its cabling and is held by Torx screws rather than hanging on a surface bracket.

What you get
Box, frame and Torx fixings.
The steel flush-mounting box takes the cables and the body of the door phone; the black 226 × 108 mm decorative frame finishes the opening at the wall face.
Two M4×15 Torx screws lock the station in, so it cannot be removed without the Torx wrench.
One kit, the whole family
Same recess for R20K, R20K-L, R25K and R20B.
All of them use the 185 × 84.5 × 24 mm housing, so the kit and the 207 × 89 × 40 mm recess are the same whichever model you fit.
Add the in-wall rain hood on exposed entries.

How it works
From bare wall to flush door phone.
01
Cut the recess
Cut a 207 × 89 × 40 mm (H × W × D) hole with all cables inside it.
02
Fix the box
Mark and drill four 6 mm holes, 25 mm deep, then fix the flush-mounting box with four ST4×20 screws and anchors. Fill gaps with cement or non-corrosive adhesive.
03
Fit the station
Wire the door phone, place it into the box and lock it with the two M4×15 Torx screws.
At a glance
Key specs — AK-R20KINWALLK-B
Show all specifications
- Type
- Flush (in-wall) installation kit
- Colour
- Black decorative frame
- Compatible with
- Akuvox R20K, R20K-L, R25K and R20B (2–5 buttons)
- Wall cut-out
- 207 × 89 × 40 mm (H × W × D)
- Flush box
- 225 × 106 × 39 mm overall
- Decorative frame
- 226 × 108 × 3 mm
- Fixings
- 2 × M4×15 Torx, 4 × ST4×20, 4 anchors, Torx wrench
- Warranty
- Australian warranty
- Brand
- Akuvox
- Reference
- AK-R20KINWALLK-B
Dimensions
- Flush-mounting box (H × W × D)
- 225 × 106 × 39 mm overall, 1 mm flange
- Box body (H × W)
- 207 × 88 mm
- Cable entries
- Knock-outs in the back and both sides
- Decorative frame (H × W × D)
- 226 × 108 × 3 mm
- Wall cut-out (H × W × D)
- 207 × 89 × 40 mm
Fit and fixings
- Compatible with
- Akuvox R20K, R20K-L, R25K and R20B (2–5 buttons)
- Not for
- R20A / R25A (shorter housing, own kit)
- Station fixing
- 2 × M4×15 Torx screws
- Wall fixing
- 4 × ST4×20 screws with plastic anchors
- Tool
- Torx wrench included
Pair it with
Completes a flush install
Door phone
Akuvox R20K, R25K or R20B
Keypad, fisheye-keypad and multi-button stations in the 185 × 84.5 mm housing, including the R20K-L.
Weather
R20K / R25K / R20B in-wall rain hood
Shields a recessed station on exposed entries.
Watch
See it in action
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 phones does it fit?
Akuvox R20K, R20K-L, R25K and R20B with 2, 3, 4 or 5 buttons. It is too tall for the R20A / R25A, which have their own kit.
What size hole do I need?
A 207 × 89 × 40 mm (H × W × D) recess that can take all the cables. The finished frame covers 226 × 108 mm of wall.
What is in the box?
The steel flush-mounting box, the black decorative frame, two M4×15 Torx screws, four ST4×20 screws with plastic anchors and a Torx wrench.
Can I add a rain hood?
Yes. The R20K / R25K / R20B in-wall rain hood fits over a station recessed with this kit.
What is different about the silver kit?
The colour of the frame (AK-R20KR20BINWALLK). Choose the one that matches your door phone.
Match the frame to the station.
Choose black to suit your door phone; the silver kit is AK-R20KR20BINWALLK. For R20A / R25A use the R20A in-wall kit instead.
Installation & safety notice
Akuvox’s guide also allows a simpler install with the box set in cement or adhesive and no wall screws, with lower vandal resistance.
- Colour
- Black frame
- Brand
- Akuvox
- Warranty
- Australian warranty
- Product Type
- Flush-mount installation kit
- Model
- R20K / R20B in-wall kit
- Includes
- Flush-mounting box, black frame, screws, anchors, Torx wrench
- Compatible with
- Akuvox R20K, R20K-L, R25K and R20B (2–5 buttons)
- Wall Cut-out
- 207 × 89 × 40 mm (H × W × D)
- Flush Box
- 225 × 106 × 39 mm overall (body 207 × 88 mm)
- Decorative Panel
- 226 × 108 × 3 mm