Return Air Grilles
14x6 return air grille
| Brand | shengtongJH |
|---|---|
| Nominal opening W × H | 14 × 6 in / 355.6 × 152.4 mm |
| Face form | Shallow fixed louvre core |
| Material options | Aluminium or coated steel |
| Frame | Flat surface flange with defined overlap |
| Mounting | Wall or equipment enclosure as specified |
| Access option | Removable face where rear inspection is needed |
| Finish | White or selected coating |
| Rear connection | Matched slot or transition to the return branch |
| Filtration | Separate assessment; shallow depth may limit local filter arrangement |
| Selection requirement | Flow and pressure loss through the complete shallow assembly |
The shallow opening limits available free area. Capacity must be checked for the selected face and rear connection rather than inferred from width alone.
Slot frame, blade form, finish and rear transition can be customized to the available space and required return duty.
A 14x6 return air grille fits a small, shallow rectangular opening. It should be used where the return duty suits that restricted geometry, not as a convenient cover for a branch that needs a larger air passage.
Check whether the slot is large enough
A shallow return opening can be useful along a restricted service band or equipment panel. Its low height also means that frame borders and blades occupy a significant part of the overall face. Select from the actual free area and operating flow rather than comparing only the visible width.
If the return requirement is too large for the available slot, consider a longer opening, multiple properly connected returns or a revised position. Increasing fan speed to force air through an unsuitable face may create noise without correcting the underlying restriction.
Keep the transition clear
A round or deeper branch behind a shallow slot needs a suitable transition. Avoid placing a flat obstruction directly behind the blades or creating a very tight turn at the mouth. The grille and transition should be coordinated before the panel opening is made.
Fit the frame without losing the opening
The surface border needs room for fastening and coverage, but the rear neck must still enter the cut-out. Use a drawing showing both dimensions. Small errors in a shallow opening can have a noticeable effect on fit and leave little material for the screws to engage.
If a filter is required, check whether the available depth and withdrawal path can support a useful holder. In some layouts a separate accessible filter location is preferable to crowding the slot with a poorly fitted local panel.
Keep the order practical
State the intended air service, installation surface and rear connection. This allows the selected grille to be matched to the actual slot rather than supplied as a generic trim with no defined airflow path.
Slot frame, blade form, finish and rear transition can be customized to the available space and required return duty.