You can usually buy these from your local carrier distributor. Look in the yellow pages, or try heatcoolparts.com. If its the plastic mess filter inside the air handler, you should also be able to hose them off with a water hose and let them dry off, then reinstall them.
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You can usually buy these from your local carrier distributor. Look in the yellow pages, or try heatcoolparts.com. If its the plastic mess filter inside the air handler, you should also be able to hose them off with a water hose and let them dry off, then reinstall them.