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The Frost King AC14H is a pair of urethane foam side panels that seal the gaps beside a window air conditioner. The foam cuts down on noise, vibration and drafts that slip past the unit, and the package includes self-stick side channels to hold the panels in place. It is a low-cost fix for a common problem and suits renters and homeowners who want a quieter room without replacing the AC. Rival kits are often thinner foam or plastic accordion fillers; this one leans on denser urethane foam for sound and vibration damping.
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The Frost King AC14H is a side panel set for a window air conditioner. It uses insulating urethane foam panels to reduce noise and vibration.
The panels fit most window units. Self-stick side channels are included in the package.
