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.
RULE OF PROXIMATE CAUSE. 1  Single Cause: When a single cause gives rise to a claim the issue is simple. If the cause is an insured one the claim is payable, if the cause is uninsured or excepted the claim is not payable.