MRCOOL LineGuard Line Set Cover Kit MLG450 – 12-Foot Protective Cover System

The MRCOOL LineGuard MLG450 is a complete 12-foot line set cover kit designed for MRCOOL ductless mini split systems. This kit provides durable exterior protection for refrigerant lines while improving the appearance of your installation. The system includes three 4-foot straight covers, a bend, a wall penetration cover, and all required connectors, giving you full control over how the line set is routed and protected.

Uncovered lines can be damaged by weather exposure, UV light, and temperature swings, which may reduce system efficiency over time. A line set cover helps shield the refrigerant tubing and insulation, supporting long-term performance and reliability. It also creates a cleaner exterior look by hiding the lines behind a uniform protective housing. The MLG450 is sized for a single line set and is compatible with MRCOOL DIY and standard MRCOOL ductless systems.

Final Sale: All MRCOOL accessories are non-returnable and non-refundable.

Key Features

• 12-foot total coverage for standard mini split installations

• Three 4-foot straight sections with connectors for smooth routing

• Bend and wall hole cover included for complete protection

• Designed to protect refrigerant lines from weather, UV exposure, and debris

• Helps maintain system efficiency by reducing insulation wear over time

• Creates a cleaner, more finished appearance on exterior walls

• Lightweight components for easier handling and installation

• Fits one line set only

Specifications

Manuals

Shipping & Returns

Shipping Policy

• Free Shipping on All Orders – We provide free standard delivery on all orders within the contiguous U.S.

• Ground Shipping for Smaller Items – Accessories and lighter products ship via standard ground carriers such as FedEx, UPS, or similar.

• Freight Delivery – Large items (HVAC/Heaters) ship via LTL freight. Drivers deliver to the curbside only; they cannot bring items into your home or garage.

• Tracking Information – Tracking is typically provided within 3–5 business days after your order is placed.

• Carrier Updates – Once tracking is issued, allow 1–2 business days for the carrier to populate shipment details.

• More Information – Full details can be found on our Shipping Policy page.

Return Policy

• 30-Day Return Window – Return requests must be submitted within 30 days of delivery; requests after this period cannot be accepted.

• Inspect Upon Delivery – Visible damage must be noted on the driver's paperwork. Report all damage within 24 hours to qualify for a replacement.

• Return Condition Requirements – Items must be unused, uninstalled, and in original packaging, including all boxes, crates, or pallets.

• Restocking Fees – Restocking fees of 25–35% apply to most brands; see full policy for details.

• Non-Returnable Items – Accessories, small components (remotes, line sets), and custom-finish items are non-returnable.

• Full Details – See our Return & Refund Policy page for complete guidelines.