Letterbox Seals

We manufacture a wide range of letterbox seals and letterbox brush strip holders, made using the same methods as our Cable Entry Seals.

Widdops letterbox seals

Letterbox brushes are designed to block draughts and debris from entering your property, while still allowing post to pass through the letterbox seal. Widdops custom-makes brushes for letterboxes, ensuring each letterbox brush strip is made to measure and will fit a wide variety of letterbox sizes.

There is no standard size for letterboxes in the UK, so having a custom-made letterbox brush strip, especially for self-seal large letter boxes, is a simple solution to get the perfect fit for your letterbox. Widdops letterbox brush seals can be manufactured in a selection of colours and materials, with standard or custom-length letterbox bristles for nearly any requirement.

Letterbox seal

Custom Letterbox brush strips

At Widdops, we’re one of the leading industrial letterbox seal and bespoke letterbox brush manufacturers in the UK. We have over 70 years of experience in manufacturing letterbox brushes for commercial, domestic household, and industrial uses. Combining our knowledge of letterbox brush seals and industrial brushes with advanced design techniques and in-house engineering capabilities, we can create custom letterbox brush strips that meet our customers’ exacting requirements.

We have supplied letterbox brush strips and letterbox seals to businesses, commercial organisations and homes across the country. If you need letterbox seals or brushes for your letterbox, Widdops have a wide range of letterbox brush products to suit your needs.

Contact us

For further information on the letterbox brushes and letterbox brush seal trims available from Widdops, take a look at our Strip Brush range, or please do not hesitate to contact us.

Frequently Asked Questions About Our Letterbox Brush Strips

  • The letterbox bristles should always go on the interior side of the door. The outer, exterior side should have a letterbox plate or flap which lifts to reveal the letterbox seal and letterbox bristles inside.

  • Letterbox brush seals are designed to stop draughts, insects, dirt and debris from entering your property. Letterbox bristles block out any prying eyes or pests, while still allowing letters and post to pass through the letterbox seal.

  • The ‘hair’ you see inside a letterbox isn’t actually hair, they’re synthetic letterbox bristles! Historically, letterbox brushes were made from animal hair, but modern letterbox seals feature a letterbox brush strip with stiff nylon or plastic letterbox bristles.

  • The quickest way to draught-proof a letterbox is to install a letterbox seal with letterbox brush strips. By installing a letterbox brush, you can prevent the elements from entering your home and eliminate any potential draughts through the letterbox.

  • The ideal materials for letterbox bristles are synthetic, with nylon and polypropylene being the most popular choices. Letterbox brush bristles need to be durable enough to bend and flex when mail enters the letterbox, but hardwearing enough to withstand the elements and prevent dirt and draughts from getting in.