We only use the best products available, using architectural grade aluminium and 316 Stainless Steel in our systems.
With only a little maintenance your products will last for years to come. How much maintenance depends on use and environmental elements. below we have put together a table with a suggested maintenance schedule.
Maintenance should include washing down gently with a soft bristle brush using only tap water and mild detergent, then rinse well. Take care when flywire is present as this can tear. Take care not to get too much water into the lock mechanisms.
Never use hard brushes or harsh detergents as this may damage surfaces.
Lubrication of the locking mechanisms should only be done using graphite powder.

Cleaning Stainless Steel Mesh Security Doors
Your Invisi Gard door is designed to last a LONG time, this system uses 316 Marine Grade Staibless Steel with a high quality powdercoat finish which is highly effective against corrosion. This being said it is important to regularly (see chart) maintain your doors and screens like any other investment.
Maintaining the Steel Mesh and frames requires washing and wiping with regular car wash and wax diluted in warm water using a soft brush like those found in a dustpan set, always thoroughly rinse with fresh water. Generally wiping in a horizontal and vertical pattern both sides will produce the best result.

Suggested Care and Maintence Table.
Environment Suggest Maximum Maintenance
Mild Every 6 months
Moderate Every 3 months
Extreme Every 2-4 weeks
Enviroment Class
Mild Not close to the ocean, eg Rural, Remote from urban and industry.
Moderate Urban area, inland and away from industry.
Extreme Within 10km from coastline of Australia,being coastal/marine, subject to salt deposition.


The products supplied  carry a 7 year (15 year for Invisi-Gard) limited^^ warranty against faulty materials (to doors and screens) and a 2 year warranty against faulty workmanship. Hardware carries a 2 year warranty excluding flywire and rollers.
No guarantee will be given against misuse, abuse, accidental damage, poor maintenance or depreciation of these materials and products.
^^Invisi-Gard Warranty Information.

KNA Security will replace or repair, at no charge, products or parts of a product that prove faulty under normal use and maintenance, due to defective materials or workmanship.  We will NOT however cover faults which occur after installation due to misuse of products, also scratches, scuffs and dents not pointed out at time of installation will not be covered. If we are attending to a service for a fault or defect which has occurred due to misuse or that is deemed not covered under warranty of the product, then there will be a service call out charge to pay.

Sliding doors
: KNA security install rollers to the top and bottom of doors. While rollers are not required at the top we do install them to help prevent the door jumping or lifting causing the door to come off its track.
Due to the nature of sliding doors in existing tracks (does not apply to enclosed tracks we supply) including but not limiting to Jason, Affinity (BGC), Dowell, Stegbar, and Boral doors where the door is installed using the existing non enclosed bottom tracks, the door in the open position is sitting on a narrow lip and can if not used with care disengage the roller from the track causing the door to come off. Again while we install measures to reduce this, if it does happen we cannot be deemed liable and a call out charge + cost of parts is applied if we are required to attend. This will not happen once the door is closed and locked as this is when the door becomes “Security”.

“My sliding security door can be just lifted off!”
For the same reasons as above, most sliding security doors in the open position can be lifted off. If you have needed to have enclosed tracks installed this wont be the case but the majority of sliding doors are sitting on a lip. As mentioned above we do install rollers to the top of the door (not all companies do as it is not a requirement) and these are adjusted up at the end of install. This does help but we cannot always adjust them all the way up as it can make certain doors too tight and put unnecessary pressure on the bottom rollers.
It is completey normal to be able to lift a door off in the “open position” as it only becomes security when closed.
Once the door is CLOSED, LATCHED and LOCKED it becomes a “Security Door”, as it will lock into the receiving channel on the lock side and interlock on the rear, only then it should not be able to be lifted off its track.
NOTE: If we attend a site due to the clients request of the door being able to be lifted off and it is inline with the above a callout fee will be charged.
Also see diagram below…

Warning: Some of our doors are very “see through” and if persons or pets are not used to them being there they can walk/run into them. We advise that you introduce your door to the occupants, especially large dogs. Always make sure the doors are latched and triple locks engaged to help prevent damage to the door in the case of this happening.

Double/Stacking doors and security.
The security testing for the Australian Standards has no testing in place for multiple panels, they are designed to test a single panel. This means although we fabricate the doors to Australian Standards, they are limited to how secure they can be due to the installation side. In other words multiple doors are never as strong or secure as single doors (hinged or sliding). We do however have techniques and systems we use when installing multiple panel door systems to make them as secure as possible.

Window Tinting

Window tinting comes with a limited lifetime warranty.
Standards for assessing window tinting can be found here…
In the rare occurrence of thermal stress cracking as explained at the time of quoting, please be aware KNA Security Pty Ltd accept no responsibility. Information on thermal cracking can be found on the AGGA website.


2 year limited warranty on hardware and install.

-The NVR (recording box) has moving parts such as fans and hard-drives, this means that they are not completely silent and can sound similar to a desktop computer. So, careful thought of where you want it situated is recommended and should be discussed before going ahead. E.g. not a bedroom or quiet/reading room.
-We include setup to compatible phones and TVs, this is done via a p2p cloud system. This is a free service provided by Uniview and as such we have no control over the up time. If we attend site for software setup after install is complete a call out fee will apply. (Setup via port forwarding with static IP can be done if needed, please discuss with consultant.)
-When IR is activated, surrounding lights or very close walls where the IR light reflects can affect image quality.
-Due to the many variables involved, setup via a network to the computer may in some cases incur additional costs.
-Although most of the time placement of cameras discussed at time of quote is not an issue, it is always subject to access.
-A demo unit is available to see at our showroom.
-Some cameras must be mounted where they will be within reach, although we always try to get a secure fixing we cannot be held responsible for theft or vandalism of products.
-If we are called out to a fault that is not due to hardware supplied or install a service charge will be applicable.


2 year limited warranty on hardware and install.

-Battery should be changed every 12-24 months for optimum performance when power is interrupted.
-A demo unit is available to see at our showroom.
-If we are called out to a fault that is not due to hardware supplied or install a service charge will be applicable.