Description

7″ x 7″ Transition Box 

The 7″ x 7″ Transition Box offers a reliable, space-saving solution that ensures efficient, balanced delivery of chilled air from your air handler to your interior grilles.

This transition box is purpose-built to work seamlessly with MSI grilles and ducting systems, acting as a vital link between flexible ductwork and outlet grilles mounted in walls, ceilings, or cabinetry. Whether you’re working with wood-framed or plastic-framed grilles, this box delivers a clean and professional connection that optimizes your air distribution layout.

Its compact 7″ x 7″ footprint makes it ideal for installation in tight spaces—such as small cabins, head compartments, bunks, or other zones where air delivery is required but space is at a premium. Despite its small size, the box is engineered to maintain efficient airflow, reduce turbulence, and support quiet, consistent climate control.

Whatever your choice, wood-framed or plastic-framed grilles, you will require a way to effectively duct the chilled air to them. We offer a wide selection of plastic ducting products—from the hose adapter on the air handler to the transitions behind the grilles. This 7″ x 7″ transition box is an essential part of that lineup, designed to perform reliably in mobile environments and integrate seamlessly with the rest of your system.

Manufactured using durable, lightweight materials, the 7″ x 7″ Transition Box is built to withstand vibration, moisture, and temperature changes commonly found in marine and RV applications. Its ease of installation and compatibility with standard MSI components make it a practical choice for both new builds and retrofit projects.

This item ships direct from the manufacturer, ensuring the highest level of quality control and prompt delivery to your location.

Key Features:

• Designed for MSI grilles and ducting systems

• Compact 7″ x 7″ size – perfect for small spaces

• Compatible with wood or plastic-framed grilles

• Lightweight and durable for marine/RV use

• Easy installation and efficient airflow

• Ships direct from the manufacturer

Choose the 7″ x 7″ Transition Box for reliable air delivery where space-saving design meets performance.