DFS
Determining the right filter
1. Determine where the air intake vents on the unit are situated. All intake vents should be filtered.
2. Measure the length and width of the air intake vents. Measure the distances 1 (O/D) & 2 (I/D) shown in the figure below. The minimum frame size is 10mm. This has to do with the structural integrity of the filter. Sometimes it will be better to choose a bigger sized filter to make sure that all the holes around a fan is covered.
3. Determine if the area where the filter is needed is ferrous or non-ferrous. Ferrous cases contain iron (Fe) and magnets will be attracted to it. Non-ferrous cases are made of substances like aluminium and acrylics. Magnets will not hold to these so you will have to indicate "non-ferrous" from the dropdown list when you place an order. These filters come with an extra magnetic frame/ ferrous tape that must be peeled and stuck to the case around the intake vent that needs to be filtered. The filter will adhere to this magnetically.
Custom Filters
Steps to customising your own custom filters are the same as above from steps 1 - 3. Before continuing tho, there is a need to consider the frame width. Please take the table provided below as a guide when designing your own custom filters. The frame width for all filters is a minimum of 10mm, the increase in frame width proportianately with frame length is so to ensure the structural integrity of the filter but this is only a guide
If the filter is in a recess or has a shape that is hard to measure we suggest that you cut the shape out of stiff paper or board.
You can then fit this cutout into the desired position and trim it until it fits exactly the way you want. The cutout will be much easier to measure. Measure it and write the measurements on the cutout. Scan or photograph the cutout and send it to us as an attachment by e-mail.
Color Combinations
The images below are to help you to visualize what the different frame colours with either black or white mesh would look like. Any DEMCiflex filter may be ordered in any of the combinations below only.
