Information is offered in good faith but cannot be used in place of current test evidence. ** All information given is for guidance purposes only. * Due to the technical nature of our products they are designed to be installed by a professional. With a range including vertical and horizontal letter boxes for doors, to perfectly complement the look of your homes frontage, we also stock large letterboxes for doors that require them, so you dont have to compromise on the style or finish you want, even if you have some specialist requirements. Note: This product requires the NOR-COUSTIC mastic to fit it. TechnicalĬolour: Polished Chrome, Satin Chrome, Gold You will need to select the size letterbox you need.
It has an adjustable telescopic sleeve and extruded aluminium spring loaded flaps designed to open to 147°, this stylish letterplate is the perfect option for any uPVC or timber door.
Please refer to our technical department for test evidence. The Yale Welseal letterbox is designed to be installed in uPVC doors in either the panel or midrail. All technical information is given as guidance only. NOTE: Screen colour may differ from actual product colour. Previously this may have caused significant damage to the soundproofing of the door set but the NOR400 aims to protect its acoustic properties.Īvailable in Gold as well as satin and polished chrome, this high quality letter plate is the perfect solution for those wanting to not only secure a fire door but who are also concerned with keeping unwanted sound to a minimum. The NOR400 has been specifically made to rectify the problem of unwanted sound being transferred in doors where cutting a hole in the centre of the door for a letter plate is a necessity. Norsound’s NOR400 acoustic letter plate comes acoustically tested up to 40db whilst also being fire- and smoke-tested to up to 60 minutes integrity.
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