How to Run Penetrate AC Lines Through Wall

08.18.2023 | News, Product

wall sleeve

Simple – Every time you penetrate a wall to install refrigerant piping and related AC lines or drain hose and electrical wiring.

HVAC installations encounter various types of installation considerations. One is penetrating a wall and then trying to pass a bundle of refrigerant, AC lines, and drain piping. Another is installing electrical wiring without damage to the bundle due to the rough edges left around the inside of the cut-out.

Inaba Denko America manufactures a wall sleeve for that very purpose. To simplify, follow these steps:

  1. Find the correct sleeve size based on the equipment manufacturer's instructions or your specific needs.
  2. Cut a hole to fit the wall sleeve.
  3. Insert the sleeve into the hole and secure it according to the installation instructions.
  4. Pass your bundle of components through the hole.
  5. Carry on with your work.

Inaba Denko America wall sleeves come in various diameters and adjustable depths to meet almost any application. is also available to meet most VRF and Ductless manufacturers’ installation requirements for drainage.

Once all of the components of the HVAC system are installed, the installer will then use Inaba Denko America’s AP Putty to seal the remaining openings around the Wall Sleeve to ensure it is weather and insect-proof.

They are used in residential and commercial applications and on VRF, ductless, and unitary equipment applications.

Inaba Denko America's NFP Flex Ivory wall sleeve comes in two sizes: 3" x 5"-7." The length of it is adjustable between 4" – 7-1/8" without cutting. Its wide flange allows for installation up to a 5" slope. The wall sleeve is easy to caulk and prevents water and pest damage to the concrete wall. Technicians cannot adjust the wall sleeve for length between 4-1/4" and 5".

As always, check in with your local code authority for any specific requirements regarding wall penetration, location, installation, and sealing.

wall sleeve


Join Our Newsletter