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Akuvox AK-E21INWALL is the in-wall box for the E21A and E21V vandal-resistant emergency intercoms. The E21 is a flush-mount panel; this box goes into a 190 × 100 × 60 mm cut-out and the 210 × 120 mm stainless faceplate fixes to it with four Torx screws.
- ✓Flush-mounting box for the Akuvox E21A and E21V
- ✓Box 187 × 98.2 × 58.1 mm; wall cut-out 190 × 100 × 60 mm
- ✓25 mm and 20 mm knock-outs; E21 fixes with 4 × M4×16 Torx screws (supplied with the E21)
- ✓Black finish, hidden behind the 210 × 120 mm stainless faceplate
Flush-mount the E21.
The box behind the faceplate.
The AK-E21INWALL is Akuvox’s in-wall mounting box for the E21 series. The E21A (audio) and E21V (with camera) are flush-mount only, so every E21 needs either this box or the E21 on-wall rain hood housing.
This SKU is the in-wall box only.
You receive the E21 in-wall mounting box. The E21A or E21V, which comes with its four M4×16 Torx screws and Torx wrench, is sold separately.
- Akuvox E21 in-wall mounting box (black)
- Akuvox E21A or E21V emergency intercom
- PoE 802.3af switch or 12–24 V DC supply
- Cement or non-corrosive structural adhesive to fill the gap around the box
- Waterproof adhesive for the faceplate edge outdoors
Built in, not bolted on.
Car parks, stairwells, lift lobbies and station platforms: a flush E21 sits neatly in masonry or concrete with only the faceplate showing.

Fit
For E21A and E21V.
Both E21 models share a 210 × 120 × 45.6 mm stainless steel faceplate and are flush-mount only. This box takes the body of the unit; the faceplate covers the opening.
Knock out the cable entries you need for the network and lock cables.
Install
Set it in, seal it, screw it down.
Cut a 190 × 100 × 60 mm opening and bed the box in cement or structural adhesive. The E21 then fixes to it with four M4×16 Torx screws.
Outdoors, a bead of waterproof adhesive around the faceplate stops water getting in behind it.

At a glance
Key specs — AK-E21INWALL
Show all specifications
- Type
- In-wall (flush) mounting box
- Compatible with
- Akuvox E21A and E21V
- Box size
- 187 × 98.2 × 58.1 mm (H × W × D)
- Wall cut-out
- 190 × 100 × 60 mm (H × W × D)
- Fixing centres
- 138 mm vertical × 84 mm horizontal
- E21 faceplate
- 210 × 120 × 45.6 mm
- E21 fixing
- 4 × M4×16 Torx screws (supplied with E21)
- Colour
- Black
- Shipping weight
- 0.54 kg
- Warranty
- Australian warranty
- Brand
- Akuvox
- Reference
- AK-E21INWALL
Box
- Dimensions (H × W × D)
- 187 × 98.2 × 58.1 mm
- Fixing hole centres
- 138 mm vertical × 84 mm horizontal
- Knock-outs
- 25 mm (centre column) and 20 mm, at 45 mm pitch on the back, sides and ends
- Colour
- Black
- Wall cut-out
- 190 × 100 × 60 mm (H × W × D)
Fit and installation
- Compatible intercoms
- Akuvox E21A and E21V
- E21 faceplate
- 210 × 120 mm, covers the opening
- E21 fixing
- 4 × M4×16 Torx screws (supplied with the E21)
- Bedding
- Cement or non-corrosive structural adhesive around the box
- Recommended height
- Button centre no higher than 1,200 mm; box bottom about 1,140 mm
Pair it with
Fits the Akuvox E21A and E21V
Audio
Akuvox E21A
Vandal-resistant stainless steel SIP emergency intercom, IK10.
Video
Akuvox E21V
The same help point with a 2 MP camera.
Surface
E21 on-wall rain hood
Use instead of this box where the wall can’t be cut.
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 intercoms does it fit?
The Akuvox E21A and E21V. Both use the same 210 × 120 mm faceplate and are flush-mount only.
How big a hole do I need?
190 mm high, 100 mm wide and 60 mm deep. The box itself is 187 × 98.2 × 58.1 mm.
Where do the cables come in?
Knock out any of the 25 mm or 20 mm entries on the back, sides or ends for the network, power and lock cables.
How high should it go?
Akuvox's placement drawing has the bottom of the box at about 1,140 mm, which puts the E21 button centre no higher than 1,200 mm.
What if I can’t cut into the wall?
Use the E21 on-wall rain cover, which surface-mounts the E21 under a hood.
Is the intercom included?
No. This SKU is the in-wall box only; the E21 comes with its fixing screws.
Flush E21 help points.
Order one box per E21A or E21V you are building into a wall; for surface mounting use the E21 on-wall rain hood housing instead.
Installation & safety notice
Fitting. Cut a 190 × 100 × 60 mm (H × W × D) hole at the cable position, knock out the cable entries you need and set the box in. Fill any gap between box and wall with cement or non-corrosive structural adhesive and let it set. Fix the E21 to the box with its four M4×16 Torx screws, then run waterproof adhesive along the joint between faceplate and wall to keep water out — see the Akuvox E21 quick guide.
- Colour
- Black
- Brand
- Akuvox
- Mounting
- In-wall / flush
- Warranty
- Australian warranty
- Product Type
- In-wall (flush) mounting box
- Model
- E21 in-wall box
- Fixing Centres
- 138 × 84 mm
- Compatible with
- Akuvox E21A and E21V emergency intercoms
- Wall Cut-out
- 190 × 100 × 60 mm (H × W × D)
- Box Size
- 187 × 98.2 × 58.1 mm (H × W × D)
- Knock-outs
- 25 mm and 20 mm