Fortress 4.5" 90° Flat Elbow – White (84111) | Lineset Cover Fitting | MRCOOL Compatible

The Fortress 4.5" 90° Flat Elbow (84111) is designed to create a smooth, professional 90-degree transition for HVAC lineset covers on flat surfaces. This fitting provides clean directional routing for refrigerant lines, drain tubing, and control wiring—ideal for both residential and commercial HVAC installations.

Part of the Fortress LD122 Series, this elbow is fully compatible and interchangeable with MRCOOL® LineGuard, making it a perfect choice for extending or modifying existing installations. Whether you're installing a new mini-split system or upgrading a heat pump, this fitting ensures a seamless, clean appearance every time.

Made from UV-stabilized, fire-resistant PVC, the 84111 elbow is engineered for long-lasting outdoor durability and resistance to harsh weather, pests, and environmental damage. Its snap-together design allows for fast installation and easy service access while maintaining a secure, surface-hugging fit that prevents birds or insects from nesting behind the cover.

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Key Features

• Smooth 90° Direction Change
  Creates a clean, professional turn for HVAC lineset routing on flat walls.

• 4.5" LD122 Compatibility
  Works with larger-capacity HVAC systems and multi-line installations.

• Interchangeable With MRCOOL LineGuard
  Seamlessly integrates with MRCOOL®, GREE, Daikin, and most major lineset cover systems.

• Durable, Weather-Resistant PVC
  UV-stabilized and fire-resistant for long-term outdoor durability.

• Snap-Together Installation
  Saves time with easy assembly and secure fastening.

• Prevents Pest Intrusion
  Tight, low-profile design helps prevent bird or insect nesting.

• Paintable Surface
  Match or blend with siding, trim, or commercial finishes.

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Specifications

• Brand: Rectorseal / Fortress

• Model / MPN: 84111

• Series: LD122 – 4.5"

• Color: White

• Material: UV-stabilized PVC

• Size: 6¼" x 4½"

• Fire Resistant: Yes

• UV Protected: Yes

• Warranty: 1 Year

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Applications

Perfect for:

• Mini-split installations

• Heat pumps

• Central AC systems

• Commercial HVAC runs

• Multi-line or oversized refrigerant lines

• Any professional lineset concealment system