Half Dome Corrections Convex Mirror Feature


Half Dome Polycarbonate Anti-Ligature Mirrors

The half dome is ideal for use in cells, day rooms, visitation areas, or any other area that requires wide area surveillance. It is also perfect at T-Junctions, eliminating blind spots around corners.



  • Virtually indestructible and unbreakable, mirror quality polycarbonate face
  • Pure reflective coating
  • Powder coated steel frame with unique tamper-proof design
  • Recessed, tamper-proof fixings
  • Optional foam insert to enhance strength.
  • Can be used in conjunction with CCTV to enhance effectiveness & safety


Download Information Sheet pdf.



Half Dome Corrections Mirror


Mirror and Frame:

Product Code Size Mirror Face View Distance Fixing Holes Frame Colour
17520HD 450mm 18" 3mm Polycarbonate Up to 4m 6 Almond
17537HD 600mm 24" 3mm Polycarbonate Up to 6m 7 Almond
17555HD 900mm 36" 3mm Polycarbonate Up to 9m 10 Almond

Optional Foam Insert:

Product Code Size mm Size Inches
21193 450mm 18"
21194 600mm 24"
21195 900mm 36"

Installation Guide

Half Dome Polycarbonate Cell Mirror Installation

Half Dome Mirror

NOTE: If installing with Rawl Spikes, it is recommended to use a punch. This is to eliminate damage to the mirror and powder-coated frame.

FOAM INSERTS: When installing the optional foam inserts DO NOT remove the grey protective film on the inserts, as this may cause damage to the mirror face.


Download Installation Guide pdf.



Suggested Fastening Methods

Rawl Spike Installation

Rawls Spike PunchInstallation: Drill a hole into the base material to a depth of at least 60mm.The tolerances of the drill bit used should meet the requirements of ISO/DIN Standard 8035. Blow the hole clean of dust and other material. Drive the Spike through the appropriate mirror face hole (and frame when used) ensuring the head is sitting firmly against the mirror or frame and recessed as shown in the above diagram.

NOTE: Care should be taken not to overdrive the Spike so as to cause damage to the powder coated surface of the frame. Finish off by applying (optional) a bead of non-pick sealant around the mirror or frame and the wall to prevent the secretion of small objects (eg razor blades etc).

DuraVision Rawl Spike Punch: The DuraVision designed punch for inserting spikes can significantly reduce the risk of damaging the mirror face and frame during installation.


Torx Screw Installation

Torx ScrewInstallation: It is recommended to use a 3/16” (4.76mm) Straight Shank Tanged Bit to drill the hole. The hole must be at least 2” or 50mm overall depth and free of any debris. By using the #27, 1/4” (6.35mm) Hex Bit the special Hi-Lo thread literally taps into masonry materials. The high,sharp thread with its notched cutting edge cuts deeply and easily. The alternating low thread provides stabilty for fast, accurate driving. Torx Tamperproof masonry screws are the optimal fastening solution for use in concrete, brick, or hollow block.

Cleaning Guide

Polycarbonate Mirror Cleaning Guide:

General Cleaning:
DuraVision™ recommend cleaning their Polycarbonate Mirrors with soap and water and then with a soft, lint free, damp cloth.


  • abrasives
  • acids
  • solvents such as petrol and laquer thinners

Use a non-abrasive polish, such Johnson's Pledge for a clear bright reflection.

Graffiti Removal:
Any graffiti should be removed from the mirror face as soon as possible and preferably within 24 hours. To remove graffiti, use a non-abrasive substance such as De-Solv-it Citrus Solution.
Not all graffiti cleaning agents are suitable. Failure to use an approved cleaning agent may damage the mirror surface.


Download Cleaning Guide pdf.

Additional Images

Half Dome Polycarbonate Cell Mirror

Half Dome Polycarbonate Cell Mirror

Polycarbonate Half Dome Cell Observation

Polycarbonate Half Dome Cell Observation

Polycarbonate Half Dome Corrections Mirror

Polycarbonate Half Dome Corrections Mirror

Half Dome Polycarbonate Corrections Mirror

Half Dome Polycarbonate Corrections Mirror

Half Dome Unbreakable Cell Mirror

Half Dome Unbreakable Cell Mirror