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Universal Portable Air Conditioner Window Seal Kit (400cm)

In Stock

Available to order — dispatched on the lead time shown below.

£10.00£20.00Save £10.00

Trade pricing available — apply or sign in for your trade rate

Dispatched in 1-2 working days

UK-Wide Delivery

Free UK mainland delivery on in-stock units

🇪🇺 EU Delivery available

Dispatched in 3–7 working days, then 5–10 working days EU transit

Orders under €150 ship VAT-paid at checkout (IOSS, no charges on delivery). Orders of €150 or more ship DDU — import VAT and customs duty are collected by the courier on delivery.

Retail prices include VAT.

The Universal Portable Air Conditioner Window Seal Kit provides an airtight thermal barrier designed to keep outdoor heat and moisture outside while locking chilled air indoors. Suitable for standard UK hinged casement windows, outward-opening windows, and tilt-turn systems with a perimeter up to 400cm, this durable polyester fabric seal installs in minutes without requiring tools or drilling. Featuring heavy-duty hook-and-loop fastening tape and dual heavy-duty zips, it accommodates both single and dual-hose portable air conditioners seamlessly. By preventing warm ambient drafts and outdoor dust from entering through open window sills, it dramatically improves the cooling performance and operational efficiency of your portable AC unit, lowering electricity consumption during hot UK summer days.

Self-install friendly

Easy

This unit is designed for confident DIYers. Guides & video below.

Add smart control

No built-in Wi-Fi — automate this unit with a smart plug & temperature sensor.

Free UK mainland delivery on in-stock units
Manufacturer warranty included
14-day returns

Technical documents & videos

Official Universal manual

The manufacturer's PDF for this model is being sourced and will be downloadable here.

All Universal catalogues and rangesMissing a document? Ask our team and we will send it over.

Full Specifications

Cooling Capacity—

Recommended Room Size—

Energy Rating—

Smart HomeNot built-in

Noise Level—

CategoryAccessories

SKUUNI-WSK-400

Physical dimensions

Exact dimensions for this model are being confirmed with Universal — ask us and we will send the cut sheet with mounting and clearance figures.

Description

Common questions about the Universal Portable Air Conditioner Window Seal Kit (400cm)

How many BTU is the Universal Portable Air Conditioner Window Seal Kit (400cm)?

The Universal Portable Air Conditioner Window Seal Kit (400cm) is a Accessories — check the specifications for capacity details.

What room size is the Universal Portable Air Conditioner Window Seal Kit (400cm) suitable for?

Use our BTU Calculator to check whether this unit is right for your room size.

Can I install the Universal Portable Air Conditioner Window Seal Kit (400cm) myself?

Yes — the Universal Portable Air Conditioner Window Seal Kit (400cm) is rated as Easy for self-installation. Guides and video tutorials are available on the product page.

Is the Universal Portable Air Conditioner Window Seal Kit (400cm) smart-home compatible?

The Universal Portable Air Conditioner Window Seal Kit (400cm) does not have built-in Wi-Fi control, but you can add smart control using a compatible smart plug.

How long does delivery of the Universal Portable Air Conditioner Window Seal Kit (400cm) take?

This unit is dispatched in 1-2 working days. Delivery is then 1–2 working days to most UK mainland addresses, and 3–6 working days into the EU.