Return Air Grilles
16x25 return air grille
| Brand | shengtongJH |
|---|---|
| Nominal opening W × H | 16 × 25 in / 406.4 × 635 mm |
| Opening orientation | Width first, portrait |
| Face material | Coated steel or aluminium |
| Blade choice | Fixed horizontal inclined blades |
| Frame | Surface border with specified fixing points |
| Access options | Fixed, removable or hinged face |
| Filter holder | Separate depth and actual panel dimensions where required |
| Finish | White or project powder coating |
| Support | Perimeter wall or plenum support |
| Air selection | Required flow and complete return-assembly resistance |
The opening label is not the filter order size. Confirm panel and holder dimensions independently for a filtered assembly.
Frame, access method, holder and finish can be customized to the narrow return bay and maintenance routine.
A 16x25 return air grille suits a taller rectangular opening where width is limited. Its configuration should reflect the real air path and whether the face is also used for filter or return-box access.
Reserve the service movement
A tall narrow face may fit between services but still have nowhere to open. Before the frame is selected, draw the path of a removable core or hinged panel. Include the technician's working position and any adjacent pipe, cable tray or equipment door.
If a filter is behind the face, its removal path is a second requirement. The panel must pass through the opening without being bent or catching on the frame. A convenient grille size does not automatically create a convenient filter arrangement.
Keep the rear route proportional
The branch and plenum should make useful use of the return face. An undersized throat or a solid obstruction behind one portion can concentrate the air through a smaller area. Review the rear section before deciding whether a more open core would actually improve the system.
Choose the border for the wall
A surface flange provides coverage around the opening, while a recessed detail requires closer coordination with the finish. Both need a supported fixing perimeter. Repeatedly removing screws from an unsupported wall edge can damage the opening and make the face harder to secure.
For an industrial support space, an accessible removable centre may be more useful than concealed fixings that are difficult to release. For a visible commercial area, the finish and border can be coordinated without sacrificing that service function.
Define the operating selection
State the design return flow and any filter pressure data with the dimensional schedule. This allows the face and holder to be selected as an air-system component, not merely a rectangular cover whose performance is assumed from its area.
Frame, access method, holder and finish can be customized to the narrow return bay and maintenance routine.