Fitting comes down to matching your window opening and the panel style to your unit.

• Measure the gap: With the AC installed and centered, measure the open space on each side from the unit’s case to the window frame.
• Match panel height: Confirm the panel height aligns with the unit’s side opening so it seals top to bottom.
• Choose a style: Accordion extenders slide into side rails; foam kits trim to size; framed panels adjust and secure with hardware.
• Check specs: Look for dimensions and extension ranges on the product page.
• Compatibility: If your unit lacks rails, adhesive-backed or framed kits are often easier.

Adding weatherstrip where light shows can improve the seal, though results can vary by window and unit.

A careful swap can refresh the seal and reduce drafts.

1. Power down: Turn off and unplug the unit. Support it; don’t loosen mounting hardware.
2. Remove old panels: Slide accordion fillers out of the side rails or gently peel off adhesive foam.
3. Prep surfaces: Clean the rails or frame so new tape adheres well.
4. Fit new panels: Slide replacements into the factory channels, or trim foam to size and apply with included tape/strips.
5. Seal edges: Press firmly and add weatherstrip where small gaps remain, avoiding any vents or controls.
6. Secure the window: Close, lock, and check for light or air leaks.

Always follow your AC’s manual and the kit instructions. Getting a second person to steady the unit can help.

Each style tackles sealing a bit differently, so pick what fits your setup.

• Foam panels: Dense, trim-to-fit insulation that helps reduce drafts and fill irregular gaps. They’re easy to cut and can be used all around the unit, though they may compress over time.
• Vinyl accordion fillers: Flexible panels that slide into factory rails on many window ACs. They’re wipeable and quick to install, but rely on a snug fit in the rails.
• Framed extenders: Rigid panels with a frame for stability and adjustable width. Useful when the original rails are missing or you want a cleaner, more durable install.

Review product dimensions and your unit’s side channels to choose confidently.

Well-fitted side panels can limit air leaks and soften outdoor sounds coming through the window opening.

• Seal the gaps: Panels that match the opening height and fill the side spaces reduce pathways for hot/cold air and dust.
• Choose thicker materials: Foam or multi-layer panels may help dampen noise more than thin fillers, though results vary by window and street noise.
• Add finishing touches: Applying weatherstrip along the window sash and panel edges can improve the seal.
• Check the top: A small top gap is common; a trim-to-fit piece can help.

These steps can improve comfort, but effectiveness depends on your window, AC model, and local conditions.

A good screen hides the unit without restricting airflow or service access.

• Leave breathing room: Plan a generous gap around the condenser based on your manufacturer’s guidance so air can move freely.
• Pick durable materials: Weather-resistant metal or composite panels hold up well outdoors and are easier to clean.
• Mind the layout: Modular 3‑panel designs are easy to position and open for maintenance; avoid fully enclosing the top.
• Secure, don’t attach: Anchor screens to the ground, not the unit, to prevent vibration and allow removal.
• Check rules: Confirm HOA or local code requirements before installing.

Many sizes are available online with delivery or pickup to fit different yard setups.