How to match the ULPA outer frame with the installation openings? Ceiling module and matching dimensions

The ULPA filter outer frame and installation openings should match the ceiling module, support method, sealing structure and assembly tolerances. The module is the basis for layout and cannot be directly used as the actual dimensions of the filter element. The modules marked on the ceiling diagram are the same, but the two boxes may still use different filter frame interfaces. The cross-sectional interface dimensions should be checked before purchasing. Aili Industrial can provide coordination verification on the filter frame manufacturing and ceiling sheet metal interface to reduce the situation of 'modules are matched but cannot be installed'.

1. Distinguish between module and net opening

Mark the center distance of the ceiling, the available openings and the outer frame of the filter element respectively, and check the adjacent modules, keel width and construction deviation to avoid mixing different size concepts.

The same modulus does not mean the same opening. Stud width, ceiling panel thickness and construction tolerances all affect the actual clear opening.Non-standard ULPA filters should list these three items separately during the size confirmation stage. The relationship between levels and filtering requirements can be found inISO cleanliness level comparison。

2. Clear support and sealing points

The filter frame should be stressed at the designed load-bearing position, and the seal needs a continuous contact surface. If the opening is too large, it may lose support; if it is too small, the outer frame may be easily squeezed.

The support position and sealing surface position are often not on the same plane, so they must be marked separately when checking. For differences in sealing methods, please refer toHEPA FAQs and Selection Guide。

3. Reserve loading and exit conditions

Check the space in conjunction with fasteners, installation tools, and removal directions. Dimensional confirmation should also cover future replacements, not just initial installation.

When the opening size is just large enough to fit in, the surrounding structure often needs to be dismantled during replacement, and maintenance costs will increase significantly. Maintenance spaces for suspended ceiling systems can be combinedCheck the installation method of the FFU fan filter unit together.

4. The ceiling module and filter frame interface need to be checked separately.

The modules marked on the ceiling diagram are the same, but the two cabinets may still use different filter frame interfaces. The module determines the layout rhythm, and the interface determines whether it can be loaded and sealed. The two cannot replace each other.

Aili Industrial canof the ULPA filter and the ceiling sheet metal interface under the same drawing conditions.Check the outer frame dimensions For non-standard ULPA filter projects, the matching relationship between the filter frame and the keel can be confirmed before production. For the interface conditions installed inside the device, please refer tothe fan filter unit on the EFU equipment side .Instructions related to

5. Related questions and answers

Is the size of the outer frame closer to the opening the better?
uncertain. It is necessary to retain the assembly margin required by the design while ensuring support and sealing conditions. Too tight will increase the difficulty of installation and the risk of frame damage.

Can the filter be replaced directly if the module number is the same?
cannot. The module number is only the basis for layout. It is also necessary to check the clear opening, support step, sealing surface position and compression method.

The opening size has been determined, can it still be adjusted?
Yes, but it is limited by the ceiling keel and structure. Before adjustment, check whether the support and sealing are still satisfactory. If necessary, use the filter frame form corresponding to the interface.

6. Related articles

ULPA ultra-high efficiency filter FAQ and selection guide

HEPA FAQs and Selection Guide

FFU FAQ and technical support

EFU FAQ and technical support

7. Key points for selection and acceptance inspection

8. Product matching and technical support from Aili Industrial

Aili Industrial canThe ULPA filter size, sheet metal interface, fan space and complete machine assembly are checked under the same drawing.The non-standard ULPA filter project can provide the equipment opening, installation direction, target air volume and testing space. First confirm the sample fit and then arrange the batch. Ceiling projects can be combinedFFU fan filter unit discusses the installation structure, and equipment-side items can be checked at the same timeEFU equipment side fan filter unit . Provide process objectives, installation drawings, operating conditions and acceptance requirements for further communicationULPA ultra-high efficiency filters . Standard specifications, non-standard interfaces, samples and batch matching of The specific parameters and test range are based on the confirmed model and technical documents.