PRICE INCLUDES GST Deflect-O Dryer Thru The Wall Kit SK8WF For use on gas & electric dryers. The Supurr-Flex Duct comes in a flexible 10.2cm diameter, 2.4m length, is fire resistant & easy to install. The Supurr-Vent Hood has curved louvres for quieter operation, opens with ease for maximum exhaust flow & is durable in all weathers.