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Trellidor the Ultimate Crime Barrier



Your Trellidor retractable window security barriers glide easily on their tracks. They don’t bind and stick like the models from the past. Each installation is custom-made to exactly fit your doors and windows, 

  • Neat compact sash designed for strength and smooth operation
  • Corrosion and UV resistant even at the coast
  • Ultra tough, self-lubricating bearings allow easy glide
  • Fitted with patented Trellidor locking systems (no more ugly padlocks!)



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… But Tough on Crime

Trellidor went all out to engineer these to be a high-level deterrent to crime. The clip you see here with the wrecking ball is one of a series of tests that they have went through to test their strength. 

These expanding gates can be custom-made to fit doors, windows, passages, patios, hatches and most other building openings, keeping them safe from intrusion.

They are made from galvanized steel and are powder-coated as well for extra protection

You also have the choice of either the Trellidor patented deadlock or slamlock.

optimized wrecking ball


  • Powder coated galvanized steel and aluminum trellis-style security gates
  • Custom made to fit your door, window or other openings
  • Engineered with strengthening features to resist attack
  • Neat, compact sash designed for strength and smooth operation
  • Corrosion and UV resistant even at the coast
  • Several models to choose from according to risk profile and budget
  • High end models internationally certified for strength under attack
  • Fitted with patented Trellidor locking systems
  • Carry warranties against defective workmanship, materials and corrosion
  • Special options such as curved units are available



There are many benefits to using aluminum as your material for gates and fencing. Below are just a few reasons aluminum has skyrocketed in popularity with property owners:



The Owner is in contact with every single job. That is priceless.Also, quality and design is %100 satisfied.Good Luck Mulholland Brand.
Eyal Shirel
Eyal Shirel
06:07 21 Dec 21
Great experience vey professional, highly recommend, we got two pedestrian gates and two driveway gates we are extremely happy with the results, the design is exactly the way we imagined. its working perfect we could not have better experience with all the team that help with our project from the office to the guys on the job site.Must emphasize that I’m 100% pleased.Thank you for running a quality super professional operation delivering a world class results.
Marc Farraye
Marc Farraye
02:48 18 Nov 21
Beautifully done and excellent service! Mulholland's team was a pleasure to work with - all the way from the initial site visit to the installation. I will be replacing a front fence and gate at some point in the future and will 100% call Mulholland to do the work. Their products and service are top-notch and will definitely add value & security to any property. Great job y'all, thanks again!!!
Shaun Young
Shaun Young
22:46 02 Nov 21
Ryan at the service department was able to schedule an appointment to repair my smart lock within a day. Norman was very professional and knowledgeable. They actually replaced the entire lock to ensure the fingerprint access will continue to work well. We were very pleased.
I purchased a new gate system over a year ago. After a slow start to get the company to come back and fix some glitches in the system I finally talked to Ryan who took my issue and ran to get me parts under warranty and made it happen. He sent me Norman who was very knowledgeable and quickly fixed all. Ryan and Norman Got me to give this 10 out of 10 review.
Judy Yeh
Judy Yeh
21:09 25 Jun 21
The entire process was easy and the install went very smoothly. Jeremy and Gonzalo were here to do the install of our security gate. They were friendly, informative, patient and thorough. Gate looks great! Thank you! I would highly recommend this company!
Javier Cervantes
Javier Cervantes
12:40 16 Apr 21
The materials and product are top shelf, and the installation is smooth with great communication. I’m grateful for the follow through as well the details to date. I know you’ll feel just as happy to do business here as well.
Marlene G.
Marlene G.
23:38 03 Mar 21
While I did not use this business to purchase a front entry gate I am writing this review to share the excellent customer service that I received from them. I was paired up with Liz and from the moment I sent an email, Liz responded. She was knowledgeable about their products, flexible, and priced right. I also liked their product offerings very much and they were even open to some customizing. Liz worked very hard to try to make the situation work for me but unfortunately we could not move forward. The problem that we ran into was location. We live in Palm Springs and they are in Los Angeles. We would have had to piece meal the project with 3 different contractors: manufacturer, shipper, and then installer. The dynamics were too risky, therefore, we had to look locally for someone who could manufacture, deliver, and install. If not for the logistical issues I would have worked with Mulholland Brands in a heartbeat. Liz, thank you so much for all of your assistance.
Tony Solano
Tony Solano
22:34 19 Nov 21
Excellent Job Performance. The Installation Crew is Fast/Professional and attentive to details. They did an amazing job. The Gates look great.

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