Fortress 4.5" 45° Flat Elbow – LKF122W (White) | Lineset Cover Fitting | MRCOOL Compatible

The Fortress 4.5" 45° Flat Elbow – LKF122W (84112) is designed to create a clean and professional 45-degree directional change for HVAC lineset covers installed on flat surfaces. Ideal for routing refrigerant lines, drain tubing, and control wiring around corners or structural obstacles, this fitting ensures a smooth, low-profile transition for any HVAC installation.

Engineered for the LD122 (4.5") Fortress Series, this elbow is fully compatible and interchangeable with MRCOOL® LineGuard, making it the perfect choice for mini-split systems, heat pumps, and central A/C installations. Contractors and DIY installers use this piece to maintain a consistent, polished appearance across any exterior wall surface.

Built from UV-stabilized, weather-resistant PVC, the LKF122W handles outdoor exposure and harsh climates with ease. Its clean white finish is also paintable, allowing you to match siding, trim, stucco, or commercial building surfaces for a seamless, customized look.

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Key Features

• 45° Flat Elbow Design
  Creates a smooth directional change for lineset ducting on flat walls.

• LD122 – 4.5" Compatibility
  Sized for larger HVAC linesets, multi-zone systems, or bundled refrigerant lines.

• MRCOOL LineGuard Compatible
  Interchangeable with MRCOOL®, Daikin, GREE, and most major cover systems.

• Durable, UV-Stabilized PVC
  Weather-resistant construction built for long-term outdoor performance.

• Snap-Together Installation
  Fast, secure assembly with easy access for service or future additions.

• Pest-Resistant Fit
  Tight, low-profile design helps prevent birds, insects, and debris intrusion.

• Paintable Surface
  Customize to match any exterior finish.

• Made in the USA
  Engineered for durability and reliability in U.S. climate conditions.

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Specifications

• Brand: Fortress / Rectorseal

• Model / MPN: LKF122W (SKU 84112)

• Series: LD122 – 4.5"

• Part Type: 45° Flat Elbow

• Color: White

• Material: UV-Stabilized PVC

• Compatible Systems: Fortress & MRCOOL LineGuard

• Warranty: 12-Month Manufacturer Guarantee

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Applications

Perfect for:

• Mini-split installations

• Heat pump systems

• Central A/C units

• MRCOOL DIY & Pro systems

• Exterior corner routing

• Residential & commercial HVAC projects