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Red Swift Nesting Brick Box
30 x 9mm ( 3/8 inch )30 x 13mm ( 1/2 inch )24 x 19mm ( 3/4 inch )24 x 25mm ( 1 inch )12 x 32mm ( 1 1/4 inch ) Measurement is the tool hole size
Protects against excessive weather conditions
Width: 110mm
9" x 6" Manthorpe Extendable Combination Cavity Wall Sleeve Vent coming-soon Red Swift Nesting Brick BoxProduct Description Extendable Cavity Wall Sleeve Vent Menu Options 9" x 6" Inch Ventilation for heating and gas appliances with integral wind baffle. This vent is to increase the airflow in a room to eliminate condensation with this sleeve vent for heat producing appliances. Extends to suit wall thickness of 190mm 335mm. Additional G935 extension sleeves available in menu options. Each pair of extension sleeves adds on a extra 120 280mm. Finished