Protecting your outdoor air conditioner unit is essential to prevent theft, vandalism, and damage from weather or accidental impacts. Metal cages designed specifically for air conditioners offer a sturdy security solution while allowing proper airflow. Below is a comparison table summarizing five top-rated adjustable metal cages from Amazon that fit various unit sizes and shapes. These cages are crafted from durable steel with powder-coated finishes for rust resistance, and many offer quick tool-free assembly.
| Product | Brand | Adjustable Dimensions | Material | Installation |
|---|---|---|---|---|
| Property Armor Air Conditioner Adjustable Security Cage X90 | Property Armor | NA (Compact Design) | Galvanized Steel + Powder Coated | Anchored to Ground or Pad |
| Nuwovwo AC Security Cage | Nuwovwo | Width 25-44 in, Height 24-46 in | Steel, Powder Coated | Anchored or Concrete Slab |
| AC Guard Adjustable Security Cage | GRISHAM | Up to 51x50x59 inches | Powder-coated 16-gauge Steel | Easy Install & Adjustment |
| Fudatong AC Security Cage | Fudatong | Width 16.1-23.2 in, Length 35.4-43.3 in, Height 25.6-41.3 in | Powder-coated Steel | With Provided Self-tapping Screws |
| Anrain Adjustable AC Mini-Split Security Cage | Anrain | Width 24-46 in, Height 25-44 in | Powder Coated Steel | Concrete Pad or Ground Anchors |
Content Navigation
- Property Armor Air Conditioner Adjustable Security Cage X90
- Nuwovwo Adjustable AC Security Cage for Mini Split Units
- AC Guard Adjustable Security Cage for All Condenser Sizes
- Fudatong Adjustable Steel AC Security Cage With Self-Tapping Screws
- Anrain Adjustable Mini-Split AC Security Cage with Powder Coating
- Buying Guide for Metal Air Conditioner Cages
Property Armor Air Conditioner Adjustable Security Cage X90

The Property Armor X90 security cage is equipped with a galvanized steel construction plus an industrial powder coating for enhanced durability and weather resistance. It is designed to protect outdoor AC units from theft and vandalism. Assembly requires no tools and can be completed within 90 seconds. The cage can be securely anchored either into the ground or fastened to a concrete pad, providing flexible installation options. This unit emphasizes fast, user-friendly setup combined with robust protection, making it suitable for residential or commercial air conditioners.
Nuwovwo Adjustable AC Security Cage for Mini Split Units

The Nuwovwo Security Cage features telescoping arms and legs enabling width adjustments from 25 to 44 inches and height adjustments from 24 to 46 inches. This versatility accommodates both round and square mini-split air conditioners within standard sizes. Constructed from sturdy steel with a powder-coated finish, the cage is resistant to rust and harsh weather. It installs quickly using self-tapping screws and can be anchored into the ground or mounted on concrete slabs for secure attachment, offering reliable protection against theft and damage.
AC Guard Adjustable Security Cage for All Condenser Sizes

Manufactured by GRISHAM, the AC Guard Security Cage is built with powder-coated 16-gauge steel that is waterproof and rust-proof. Its dimensions can be adjusted up to 51 inches wide, 50 inches deep, and 59 inches tall, making it compatible with most residential and commercial air conditioning units. This cage includes a sturdy top bar and lockset for added security against theft. Designed for easy installation and adjustment, it ensures your condenser stays protected from external threats and physical damage.
Fudatong Adjustable Steel AC Security Cage With Self-Tapping Screws

The Fudatong Security Cage offers an adjustable design with telescoping arms and legs, covering widths between 16.1 and 23.2 inches, lengths between 35.4 and 43.3 inches, and heights from 25.6 to 41.3 inches, fitting many mini-split units both round and square. Its powder-coated black steel construction provides a robust, weather-resistant barrier against accidental impacts, vandalism, and outdoor elements. The package includes self-tapping screws for straightforward mounting, enabling effective theft prevention for your air conditioner investment.
Anrain Adjustable Mini-Split AC Security Cage with Powder Coating

The Anrain AC Mini-Split Security Cage is crafted to provide tough protection against vandalism and theft. It features adjustable telescoping arms and legs, allowing width adjustments from 24 to 46 inches and height from 25 to 44 inches, fitting most commercial and residential air conditioning units. The cage is powder-coated to resist corrosion and mounts securely on concrete pads or ground anchors with included self-tapping screws. Its rugged design enhances durability and safeguards your HVAC equipment effectively.
Buying Guide for Metal Air Conditioner Cages
Choosing the right metal cage for your air conditioner involves several important factors to ensure effective protection and longevity:
- Material Quality: Opt for cages made from galvanized steel or powder-coated steel, which resist rust and weather damage.
- Adjustability: Adjustable width and height features help fit a range of AC unit sizes and shapes, including round or square condensers.
- Installation Method: Consider whether the cage can be anchored to ground, mounted on concrete slabs, or requires special hardware for your setup. Tool-free or quick-install systems reduce setup effort.
- Security Features: Look for lockable top bars or included locksets that prevent unauthorized access and enhance theft deterrence.
- Ventilation: The cage design should allow sufficient airflow to the unit for efficient operation while keeping it enclosed and protected.
- Size Compatibility: Measure your air conditioner’s dimensions accurately to choose a cage with compatible adjustable ranges.
- Durability and Weather Resistance: Outdoor cages must withstand rain, sun, and wind; ensure powder coating or galvanized finishes provide this protection.
- Ease of Maintenance: Consider cages that allow easy access for servicing your air conditioning unit without full disassembly.
By evaluating these aspects, you can select a metal cage that securely protects your air conditioner against theft, vandalism, and environmental damage while ensuring optimal performance.