495 x 495mm 25mm (1″) Cardboard Filter

The 495 x 495mm 25mm (1″) Cardboard Filter is a disposable panel air filter with a rigid cardboard frame and pleated media, 25mm (1″) deep. Fits into standard AHU and return-air housings as a G4-grade pre-filter, capturing coarse dust and debris to protect downstream equipment and finer filters. Designed for straightforward replacement — simply slide out the old filter and fit the new one in the same frame size.