Skip to product information
Filter Slot Seal for 1” Furnace Filter, Up To 25” Long M335420
Sale price
$2.95
Regular price $9.99
Shipping calculated at checkout.
- Protect Your HVAC System: FilterLock is a patented two-piece seal system designed for use with 1” air filters that eliminates air leakage at the filter slot/door to improve indoor air quality (IAQ) and reduce energy consumption.
- Improve Air Quality: If not properly sealed, harmful airborne contaminants such as allergens, dust, and gases like carbon monoxide can enter heating, ventilating and air conditioning (HVAC) systems through the filter slot/door and bypass the air filter.
- Energy Efficient: By stopping air leakage in your HVAC system, you’ll help reduce utility bills, save energy, and improve overall indoor air quality. Energy Star lists air leakage at the filter slot as one of four major issues with duct work in the home.