Unfortunately, most furnace filters are slid in place without an airtight seal, which allows air to pass around the filters. This problem is worse for the higher-efficiency MERV filters because of the increase in air resistance.
Common Cause is a network of people working to help rebalance cultural values to create a more equitable, sustainable and democratic society. 1  We are all shaped by our culture.
cause - events that provide the generative force that is the origin of something; they are trying to determine the cause of the crash inception, origination, origin - an event that is a beginning; a first part or stage of subsequent events