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Security Gates

Let the Fresh Air In. Keep the Unwanted Guests Out.

Warmer months mean open doors and windows — and easier access for intruders. See how a retractable trellis security gate secures patios and sliding doors.

15 September 2026 · 5 min read · By DEFENDoor

A dark retractable trellis security gate drawn across a wide doorway, with the door behind it standing open.

Why protecting your home matters as we head into the warmer months

There’s something wonderful about warmer weather. Windows and doors are opened, fresh air moves through the house, patios become an extension of your living space and evenings are spent enjoying the outdoors.

But there’s one thing that shouldn’t be left open when your doors are: an opportunity for unwanted visitors.

As we move into the warmer months, home security becomes especially important. Open doors and large patio or sliding-door openings can make your home feel more connected to the outdoors — but without the right security measures, they can also create an easier access point.

The good news? You don’t have to choose between fresh air, an open home and feeling secure.

That’s where a quality retractable trellis security gate comes in.

Keep your doors open — without leaving your home exposed

A traditional security door can sometimes feel like it limits the way you use your home. This is particularly true for large patio doors, entertainment areas and wide sliding-door openings.

A retractable trellis security gate gives you another option.

When you want the space open, the gate concertinas neatly to the side. When you want your home protected, it slides across the opening and locks securely into place.

That means you can enjoy:

  • Fresh air and natural ventilation
  • Open-plan indoor/outdoor living
  • Uninterrupted access to patios and entertainment areas
  • Greater peace of mind during the day and evening
  • An additional layer of protection between your home and the outside world

In other words: open the doors. Not the opportunity for intruders.

Why choose a retractable trellis security gate?

Not all security gates are created equal.

DEFENDoor® trellis security gates are custom-built to the exact measurements of your opening, rather than being adapted from a standard size. This creates a clean, precise fit and ensures the gate is designed specifically around the space it needs to protect.

The gates use single continuous steel uprights, rather than two joined bars. This is an important security feature because there is no seam for a crowbar to work into.

The result is a security solution that is designed not only to look good, but to perform when it matters.

Security without sacrificing your home’s style

Modern homeowners don’t necessarily want their security products to dominate the look and feel of their home.

A good security solution should complement your property — not make it feel like a fortress.

DEFENDoor® retractable trellis gates are powder-coated and available in a range of colours, including Black, White, Anthracite Grey, Silver, Bronze and Chocolate Brown, with custom colours available on request.

So whether your home is modern, traditional, minimalist or somewhere in between, your security gate can be integrated into the overall aesthetic.

Because protecting your home shouldn’t mean compromising on how you want it to look.

What makes DEFENDoor® Retractable trellis gates different?

DEFENDoor® has been manufacturing security solutions in South Africa since 1995 and offers custom-engineered security products for homes and businesses nationwide.

The retractable trellis range includes four models, from the DX-215 through to the DX-222.

Depending on the model selected, features include:

  • Single steel uprights Most models use 19mm single steel uprights, with the DX-215 using a 16mm single steel bar.
  • High-security locking The range uses star-key hook locks, with two locks standard on the DX-222 and DX-420.
  • Strong steel construction The DX-222, DX-420 and DX-310 use all-steel construction without plastic or nylon structural components.
  • Custom manufacturing Every gate is made to the exact size of the opening it needs to secure.
  • Professional installation DEFENDoor measures, manufactures and installs the gate — because correct installation is an important part of an effective security solution.
  • Up to a five-year guarantee The DX-222, DX-420 and DX-310 carry five-year guarantees, while the DX-215 carries a two-year guarantee.

The perfect solution for patios, sliding doors and entertainment areas

Trellis security gates are particularly useful for wide openings, making them ideal for:

  • Patio doors
  • Stacking doors
  • Sliding doors
  • Entertainment areas
  • Courtyards
  • Passages
  • Large residential openings
  • Areas where you want the opening to remain accessible when the gate is not in use

Because the gate retracts into a narrow stack against the wall, you don’t have to permanently sacrifice valuable space.

This makes a retractable security gate particularly practical for South African homes where indoor/outdoor living is such an important part of everyday life.

Don’t wait until you need security to think about security

One of the biggest mistakes homeowners can make is treating home security as something to think about after a break-in or security concern.

The better approach is preventative.

Look around your home and consider:

  1. Which doors are regularly left open?
  2. Which openings lead directly onto patios or gardens?
  3. Are your sliding or stacking doors adequately protected?
  4. Can you enjoy fresh air without leaving your home unnecessarily exposed?
  5. Would an additional physical security barrier give your family greater peace of mind?

If the answer to any of these questions is “not really”, it may be time to look at your options.

Security should work around your lifestyle

The best home security solution isn’t necessarily the one that makes your home feel the most secure when everything is locked up.

It’s the one that allows you to live normally while staying protected.

  • Open the patio doors.
  • Let the breeze in.
  • Enjoy the garden.
  • Entertain friends.
  • Let the kids move between inside and outside.
  • And when you need to secure the opening, simply close and lock your DEFENDoor® retractable trellis gate.

That’s smart security.

Protect what matters most

Your home is more than walls, windows and doors. It’s where your family lives, where memories are made and where you should feel safe.

As the warmer months arrive, don’t let the desire for fresh air and open living compromise your home’s security.

Choose a security solution that gives you both.

Fresh air? Absolutely.

Open doors? Of course.

Compromised security? Never.

DEFENDoor® — protecting what you love since 1995.

Ready to make your home more secure?

DEFENDoor offers a free on-site assessment to measure your opening and recommend the right security gate for your home. Assessments are available nationwide.

Call 0860 333 363 or email sales@defendoor.co.za for a free quote.

Explore DEFENDoor® Retractable Trellis Security Gates: View the DEFENDoor® Retractable Trellis Gate range

FAQ

Frequently asked questions

Can a retractable trellis gate secure a wide patio or sliding-door opening?

Yes. Every DEFENDoor® trellis gate is custom-built to the measured opening, so it fits wide patio, stacking and sliding doors cleanly. Open, it concertinas into a narrow stack against the wall; closed, it locks across the full width of the opening.

Can I leave the door open for ventilation and still be secure?

That is what the gate is for. Unlike a fixed security door, a retractable trellis gate lets you keep the door open for airflow and then lock the gate across the opening, so the entrance stays usable without being left exposed.

How secure is a trellis gate?

Most models use 19mm single continuous steel uprights — the entry-level DX-215 uses a 16mm single steel bar — so there is no seam for a crowbar to work into. The range uses high-security star-key hook locks, with two locks fitted as standard to the DX-222 and DX-420.

Are the gates made to fit my opening?

Yes. Every gate is built to the exact size of the opening it needs to secure, so it fits the jamb cleanly with nothing to pack out. DEFENDoor® measures the opening at the free on-site assessment.

What colours do trellis security gates come in?

Six standard powder-coated colours: White, Black, Anthracite Grey, Silver, Bronze and Chocolate Brown. Custom colours are available on request.

How long is the guarantee on a trellis gate?

Five years on the DX-222, DX-420 and DX-310, and two years on the entry-level DX-215.

  • retractable gates
  • trellis gates
  • home security
  • patio doors
  • sliding doors

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