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Williams 2203821 Seal Kit
A seal kit can actually seal the entire wall unit from the outside, in turn making it more effective and easier on the wallet. Most seal kits are easy to install and are designed to help save expenses with your wall unit.
Key signs of an unhealthy seal kit
- You can actually see the outdoors while peering right next to the system
- You can feel way too much air being let through all around the unit
- It is taking too much time to heat or cool the main areas
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