18x18x4 Pleated Panel (high capacity)

All our Glass Panel Filters, Pleated Panel Filters & Bag Filters are sized in millimetre depths & face dimensions. These are sized to suit industry standard sized holding frames, i.e. a 592 x 592 x 45 mm (+5 mm / -0) panel filter is sized to fit into a 24 x 24 x 2″ (610 x 610 x 51 mm) holding frame. The filter sizes are smaller to allow the filter fitting with holding clips. This is normal & all manufacturers provide filters smaller than holding frames. For example, 24 x 24″ faces are normally between 592-597 mm & 2″ depths are normally between 45-48 mm. (Some filters may have the nominal size stamped on the filter, say 24 x 24 x 2″ or 610 x 610 x 50 mm, the actual filter size will however be smaller).