does this fit on to most portable air con units please

No, you would need to check the size of the hose - this one is 100mm in diameter some are 125mm depending on the manufacturer

Would this vent an ac units hose through a letterbox? Thanks.

Yes it will but you will need another adaptor which Amazon had on a buy both option.This slim adaptor is a god send and were using it as I write .

Will this fit a 6ich tube

Hello If you look on the sizes . It says 100mm diameter. Which is approximately only 4" .so no it wont fit 6"

Kair 220 X 90mm To 150mm Rectangular To Round Duct

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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€ 40.44

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Sold byAmazon GERMANYDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔄 Transform your airflow game with Kair’s sleek duct adaptor!

OPTIMIZED AIRFLOW - Independently tested with minimal static pressure drop ensuring peak ventilation efficiency.
SPACE SAVVY DESIGN - Compact profile ideal for tight spaces without compromising airflow efficiency.
PRO GRADE DURABILITY - Crafted from high-quality UK-made polystyrene/polypropylene for long-lasting performance.
PLUG PLAY INSTALLATION - Push-fit design for quick setup; compatible with Kair’s full range of ducting accessories.
SEAMLESS DUCT CONVERSION - Effortlessly switch between rectangular and round ducting systems for ultimate installation flexibility.

The Kair 220 x 90mm to 150mm Rectangular-to-Round Duct Adaptor is a UK-made, durable plastic connector designed to convert rectangular ducting to round ducting seamlessly. Engineered for tight spaces, it features a push-fit installation and is independently tested for low static pressure drop, making it perfect for HVAC, kitchen, bathroom, and whole-house ventilation systems.

Specifications

ASIN	B07G2BLP5X
Batteries Required?	No
Batteries included?	No
Best Sellers Rank	9,841 in DIY & Tools ( See Top 100 in DIY & Tools ) 19 in Ducting
Customer Reviews	4.6 4.6 out of 5 stars (879)
Date First Available	31 July 2018
Guaranteed software updates until	unknown
Item Package Quantity	1
Item Weight	300 g
Manufacturer	Kair
Manufacturer reference	DUCVKC5713
Package Dimensions	29.1 x 28.5 x 15.7 cm; 300 g
Part Number	DUCVKC5713
Size	220mm x 90mm to 150mm

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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Excellent communication throughout the order process. Product is perfect.

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The MOLLE sheath is of exceptional quality. Very happy with my purchase.

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€ 40.44

Duties & taxes included

In stock

Sold byAmazon GERMANYDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to GERMANY.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Vikram D.

The MOLLE sheath is of exceptional quality. Very happy with my purchase.

2 weeks ago

Imran F.

Very reliable shop with genuine products. Will definitely buy again!

2 weeks ago

View all Trustpilot reviews