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high-output ventilation for effective air movement
They help reduce heat loss
puncture and fire-resistant ducting
They also blank off unused duct sections
Fitted externally to the damper
Qwikfoot Square Rubber Support Feet, Single Channel Length x Width x Height:350mm x 350mm x 100mm high-output ventilation for effective airDurable heavy duty square feet Take 41mm single for making H Frames and other channel frameworks Made from recycled rubber giving built in anti vibration properties Heavier than plastic versions give increased ballast on light weight installations
