• MRCOOL 3.5" Wall Sleeve and Cap Kit MCSLEEVE - Clean HVAC Line Set Installation -
  • MRCOOL 3.5" Wall Sleeve and Cap Kit MCSLEEVE - Clean HVAC Line Set Installation -
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MRCOOL DIY Direct

MRCOOL 3.5" Wall Sleeve and Cap Kit MCSLEEVE - Clean HVAC Line Set Installation

MRCOOL 3.5" Wall Sleeve and Cap Kit MCSLEEVE - Clean HVAC Line Set Installation

$49.95 USD
$60.99 USD $49.95 USD
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SKU12122200002820 + 12122200002847

✅ This item is in stock!

More than 30 available

Estimated Delivery: November 02 – November 04

Based on order date & typical delivery times.
• Orders Typically ship within 2 business days

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PRODUCT DESCRIPTION

MRCOOL 3.5" Wall Sleeve & Cap Kit (MCSLEEVE) — Mini-Split Line Set Wall Pass-Through | MRCOOL DIY Direct

The MRCOOL 3.5" Wall Sleeve and Cap Kit (MCSLEEVE) ensures a clean, professional finish when routing pre-charged or traditional HVAC line sets through a wall. Designed for both new installations and retrofit projects, this genuine MRCOOL accessory protects your HVAC lines from wear, weather, and abrasion while maintaining a polished, finished appearance.

Built with durable, high-quality materials, the MCSLEEVE Wall Pass-Through Kit helps reduce long-term wear and improves the efficiency and reliability of your mini-split system installation. It’s easy to install and compatible with all MRCOOL systems — including DIY Series and Advantage Series units.

Key Features & Benefits

  • ✔ Professional Finish: Provides a clean, sealed wall pass-through for HVAC line sets, improving appearance and protection.
  • ✔ Durable Construction: Made from tough, long-lasting materials designed to resist wear and weather exposure.
  • ✔ Easy Installation: Installs quickly for both new MRCOOL mini-split setups and replacements.
  • ✔ Protects Pre-Charged Line Sets: Prevents kinking and abrasion of refrigerant lines and insulation.
  • ✔ Genuine MRCOOL Replacement Part: Engineered for perfect fit and compatibility with MRCOOL systems.

Technical Specifications

  • Product Type: Wall Sleeve & Cap Kit
  • Brand: MRCOOL
  • Model Number (MPN): MCSLEEVE
  • Diameter: 3.5"
  • Compatibility: MRCOOL DIY Series, Advantage Series, and other mini-split systems
  • Application: Wall pass-through for HVAC line sets and condensate hoses
  • Material: High-Density ABS Plastic
  • Includes: Wall Sleeve Tube & End Cap
  • Installation Type: Interior / Exterior
💡 Pro Tip: MRCOOL’s 3.5" wall sleeve is specifically sized to accommodate the Quick Connect pre-charged line sets used in MRCOOL DIY systems. The extra internal diameter allows the pre-insulated refrigerant lines to pass smoothly through the wall opening without compression or tearing. Always align your sleeve angle slightly downward toward the exterior for proper condensate drainage and professional finish.
Buy from MRCOOL DIY Direct — the USA’s trusted source for genuine MRCOOL parts and accessories. Enjoy nationwide delivery, fast shipping, and dedicated customer support for all your MRCOOL installation needs.

 

Customer Reviews

Based on 6 reviews
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J
Jack Grasser

MRCOOL 3.5" Wall Sleeve and Cap Kit MCSLEEVE - Clean HVAC Line Set Installation

J
Jack Grasser

MRCOOL 3.5" Wall Sleeve and Cap Kit MCSLEEVE - Clean HVAC Line Set Installation

J
Jerry Richardson
3.5 wall sleev

i have 2 18k mini Splits they came with 3" line I think the 3" ic too small if you
have more than one corner dont want to bend any more than i did, i used a 4 " rad, I will usse the 3.5 thru the wall with 4" lene covers

J
Jerry Richardson
3.5 wall sleev

i have 2 18k mini Splits they came with 3" line I think the 3" ic too small if you
have more than one corner dont want to bend any more than i did, i used a 4 " rad, I will usse the 3.5 thru the wall with 4" lene covers

A
Andres Navarro
Great product

Fit perfectly in the 3.5 in core bored out hole through cinder block wall and had some excess that was easily cut off

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