Article number: 8714634051353 View all from RiZZ > View more: Draught excluder > RiZZ - Letterbox brush - Black With a letterbox brush you can easily keep outside. This letterbox closer is easy to attach to the inside of the front door. Includes screws for mounting. Product specifications Letterbox brush - Black - without flap - black Article description Letterbox brush - Black Article number 8714634051353 Version without flap - black Color Black Color Black Product type With brush Self-adhesive No Country of origin Netherlands Dimensions: External dimensions: 80 x 340 mm Internal dimensions: 50 x 310 mm Environmental information about Letterbox brush - Black Sealing seams and cracks in a corner house or semi-detached house saves around 70 m3 of gas per year. With the current and rising gas price, this quickly amounts to a saving of 60 euros. Because the draft stays outside and the house feels cooler, you can turn down the thermostat by one degree, which can save you €110 per year. This can sometimes save you as much as €170 per year.