Rectorseal Fortress® 3.5" Slim Duct Wall Insulated Cover – UV-Resistant Line Set Protection (Model 84016)

Please Note:
This is the slim duct version, featuring a 3.5-inch profile. Standard Fortress line guards and MRCOOL line guards measure 4.5 inches and are not compatible with this model.
If you are looking for the 4.5-inch version, you can find it here.

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Product Overview

The Rectorseal Fortress® 3.5" Wall Insulated Cover (MPN: 84016) is engineered to protect and conceal exposed refrigeration line sets, electrical wiring, and plumbing associated with HVAC installations. Its compact slim-duct design makes it perfect for applications where space is limited or a low-profile aesthetic is preferred.

Ideal for use with:

• Mini-split systems

• High-velocity air handlers

• Conventional ducted A/C systems

This cover enhances system longevity by shielding components from weather, UV exposure, and physical damage—all while delivering a clean, professional finish to any installation.

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Key Features

• Slim 3.5-Inch Profile – Designed for tighter installation spaces; not interchangeable with 4.5" line set covers.

• Durable, UV-Stabilized PVC Construction – Built to withstand harsh outdoor environments.

• Weather Resistant – Protects line sets from rain, sun, and physical impact.

• Paintable Surface – Can be color-matched to exterior or interior finishes.

• Simple Installation – Includes stainless steel mounting hardware for a secure fit.

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Product Specifications

General Information

• Brand: Rectorseal

• MPN: 84016

• Country of Manufacture: USA

• Warranty: 1 Year

Technical Details

• Overall Dimensions: 9" × 4.38" × 3.125"

• Weight: 0.465 lbs

• Material: UV-stabilized PVC

• Temperature Range: −4°F to 140°F

• Included Hardware: (2) Stainless steel screws