How does the Stormguard Letterbox Brush Seal work?
Whilst your letterbox is often overlooked as a serious source of concern, when it comes to draughts, when you’re keeping a close eye on your energy bills, every little helps. Just like an open window, an open letterbox will act to draw warm air out and allow cold air to creep in. However, complete with thick brush strips- a draught proof letterbox, acts as a barrier to draughts, wind and rain, whilst also preventing warm air from escaping.