MSR Heat Exchanger One Size. The unique waffled design channels the heat from the stove up the sides of the pot to increase the heated surface area. When used with liquid fuel stoves or remote-burner canister stoves like the MSR WindPro II it can also act as a wind block because it extends below the pot. Specifications for MSR Heat Exchanger: Manufacturer: MSR Weight: 6 oz Application: Cooking Color: One Color Length: 8 in Width: 8 in Stove Accessory: Stove Extra Features of MSR Heat Exchanger Compatible With: Pots 6.6 in. 7.3 in. (16.8 cm 18.5 cm) in diameter including the MSR Alpinist 2 cook set Quick 2 cook set Ceramic 2.5 L pot Ceramic 2-Pot set Alpine 2 pot set and Alpine StowAway 1.6 L pot. To Use: Position the Heat Exchanger around the pot and extend a half inch (1.3 cm) below the bottom of the pan. Adjust the thumbwheel until the Heat Exchanger fits snugly. Package Contents: MSR Heat Exchanger MSR 321105: Heat Exchanger One Size