Big Door Stopper 2 Packs Heavy Duty Wedge Rubber Door Stop Works on All Floor Surfaces Height up to 1.9 Inches Non-Scratching Doorstops Special for Home Office School Heavy Door (Black) Black Color:Black Our vinyl sticker is the

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Check if the air valve is not completely closed Solutions: Press the air valve with your finger after vacuuming F

It can continuously work for 50 hours with 4*AAA batteries power supplied

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Big Door Stopper 2 Packs Heavy Duty Wedge Rubber Door Stop Works on All Floor Surfaces Height up to 1.9 Inches Non-Scratching Doorstops Special for Home Office School Heavy Door (Black) Black Color:Black Our vinyl sticker is theBig Door Stopper 2 Packs Heavy Duty Wedge Rubber Door Stop Works on All Floor Surfaces Height up to 1. 9 Inches Non Scratching Doorstops Special for Home Office School Heavy Door (Black) Product Features Biggest and Strongest Door Stopper Made of high quality rubber material ,Special for heavy door, compared with others rubber doorstops, it is more bigger and stronger. Only one door stop can hold doors with clearances up to 1. 9 inch. Perfect Works on