Adjustable Window Exhaust Seal Plate Kit for Portable Air Conditioners

Optimize the performance of portable air conditioners and stop drafts with the adjustable window exhaust seal plate kit from Harrow. Specifically designed for casement, awning, and tilt-and-turn windows, this universal ventilation solution creates an airtight, weather-resistant barrier for exhaust hoses and prevents warm air, dust, and insects from entering your room. The SEO-friendly design and clear measurement instructions make this kit ideal for DIY installation and energy-efficient cooling.

Main Features

• Universal fit for casement windows: designed for tilt, awning, and tilt-and-turn windows; not suitable for horizontally or vertically sliding windows.
• Adjustable size: clear measurement instructions with the formula + b + c for a reliable fit – the total perimeter should not exceed the recommended limit for full sealing performance.
• Durable, weather-resistant construction: heavy-duty fabric with reinforced seams and a flexible frame keeps the plate stable and reduces air leaks.
• Airtight sealing system: integrated seals and adjustable edges form a tight seal around window frames and exhaust hoses to reduce energy loss and noise.
• Tool-free installation: quick setup with Velcro strips, adhesive seals, and easy accessories for most window frames; quick disassembly for storage when not in use.
• Compact and foldable: lightweight, foldable design stores flat and is easy to pack for seasonal use or travel.

Compatibility & Measurements

Measure the three sides marked a, b, and c in the diagram to confirm the fit. The kit is optimized for window openings where the sum of a + b + c is within the maximum perimeter of the product. This measuring method ensures that the foldable plates close neatly around casement windows and provide a secure seal for exhaust hoses.

Installation Overview

• Step 1: Measure your window opening (see diagram a, b, c) and confirm that the total perimeter meets the kit specifications.
• Step 2: Attach the adhesive sealing strips to the window frame to create an initial airtight barrier.
• Step 3: Position the foldable plate over the window and secure it with the provided mounting materials or Velcro straps.
• Step 4: Feed the exhaust hose of the portable air conditioner through the opening of the plate and tighten the adjustable collar or seal to prevent leaks.
• Step 5: Test for drafts and make small adjustments for a snug fit; remove and store when the cooling period ends.

What’s Included

• Adjustable foldable window plate
• Adhesive sealing strips and mounting hardware
• Adjustable exhaust collar/seal
• Installation instructions with measurement diagram

Who the Product is For

Homeowners and renters using portable air conditioners who need an effective, removable ventilation solution for casement windows. Ideal for energy-conscious buyers looking to reduce cooling costs, prevent dust and pests, and improve exhaust efficiency without permanently modifying the window.

Care & Maintenance

Wipe the plate with a damp cloth and a mild detergent. Allow it to dry completely before folding and storing. Check seals and adhesive strips seasonally and replace them when worn to maintain optimal sealing performance.