Check the slot.
This range is for 10 mm filter slots. A 20 mm slot needs a different filter.
Return-air filters. Simply matched.
Replacement filters for egg-crate return-air grilles with a 10 mm filter slot. Choose your RenAir number, or ask us to help check the fit.
Dispatched from Adelaide · A$22 delivery Australia-wide

Know what fits
This range is for 10 mm filter slots. A 20 mm slot needs a different filter.
The printed grille size is not the filter size. Compare the filter’s larger bottom-box dimensions with the product’s fit details.
See how to measureSend a grille photo and any label or measurements. Our team will reply by email.
Send a photo for a fit check
Made for the filter slot
The frame has two steps. The bottom box is the larger one, and it is the part that sits in the grille. Its length and width are the filter size we list on every product page.
Get to know the range →Tell us your filter number, grille size and filter slot. If you are not sure, describe what you have and we’ll help you work out the next step.
Our team will review your enquiry and get back to you by email.
To include a photo, attach it to an email to support@renairfilters.com.au.
We use these details to respond to your enquiry. This form does not subscribe you to marketing emails. Privacy policy