Article number: 8714634051360 View all from RiZZ > View more: Draft strip > With a letterbox brush you can easily keep outside. This letterbox closer is easy to attach to the inside of the front door. Product specifications Letterbox brush - Brown - without flap - brown Article description Letterbox brush - Brown Article number 8714634051360 Version without flap - brown Color Brown Color Brown 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 - Brown 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 results in a saving of 60 euros. Because the draft stays outside and the house feels less cold, the thermostat can be lowered by one degree, which can also save 110 euros per year. In total, this can sometimes mean a difference of up to 170 euros per year.