Return Air Boxes/Plenums Side Entry (Height = Spigot Size + 75mm)

NOTE:
• To select the correct product code from the table above for a specified box size, you must firstly calculate the perimeter of the box as shown in the example above which will determine the correct perimeter range to choose from in the table above.
• If a specified box exceeds the perimeter range it will be priced on application.
• If the spigot size does not fit the specified box we will automatically step the box to suit at an additional charge of $.
• Fresh air spigot and filter $.
• Filter track and slide available at additional cost, please enquire.