For chimney sizes up to 31cm x 31cm (12" x 12")This is the large square Chimsoc. It's suitable for use in chimney stack with internal measurements up to those shown above. The Chimsoc itself is actually slightly larger than the sizes shown once inflated. This is to allow it to hold in place against a minimum of 2 paralell sides.
What's in The Box?1 x Chimsoc - Large SquareA tough re-useable plastic balloon with our special heat sealed inner section, ensuring no leaks. The Chimsoc is designed to stop chimney draughts and reduce heat loss is chimneys that are not being used. The Chimsoc is slightly curved at one end to allow for a little ventilation.
1 x Hard Plastic Reminder TabA solid red plastic disk, printed with
Chimsoc Installed on it, designed to help ensure that you don't forget that your Chimsoc is installed in your chimney stack. Either hang it to the installed Chimsoc by string, so that the tab can be seen hanging in the fireplace opening, or put it in a prominent position in your fireplace.
1 x InstructionsA set of instructions are included with every Chimsoc.
What We Include For Free1 x Chimsoc - Inflation Hose (1 per order)We'll include an inflation hose (500mm long) free with every order. You need one, so we'll include it, for free.
Product FeaturesClick here to view Chimsoc features.
InstallationClick here to view our installation guide for the Chimsoc.
Using a Pump for Inflation is PreferableWhen you inflate your Chimsoc using lung air, the air is warm. As the air cools inside the Chimsoc, it contracts, and your Chimsoc will appear less inflated, and need topping up. Solve this by using one of our inflation pumps. For the Chimsoc - Large Square, you can use either our Inflation Pump - Small, or our Inflation Pump - Large.
Patent Pending 
