SM Through Wall Letterbox Locking Weatherproof Galvanised Steel
The SM Through Wall Letterbox is a sleek, adjustable, and secure letterbox designed for classic through the wall installation. Made from galvanised steel with a thermally powder-coated finish, this weatherproof letterbox offers enhanced rust resistance and a smart, durable appearance for everyday external use.
This through wall post box is adjustable from 230mm to 380mm, allowing it to fit through most walls. To receive A4 post, the letterbox must be extended to 330mm. Please note that this model is not suitable for single brick walls.
A built-in window indicator on the inside gives a clear visual indication when post has arrived, while the removable rear door provides easy access for mail collection. The secure cylinder lock, supplied by Euro-Locks Lowe & Fletcher, includes 2 keys for reliable mail protection.
Available in a choice of Matt Black, White, Copper, Silver RAL 9006, and Dark Grey, the SM through wall letterbox is a practical option for homes, offices, flats, and commercial properties looking for a clean and secure mail solution.
If you are looking for a through the wall letter box, with collection box you may be interested in the Rolle. View our complete range of through the wall letterboxes here.
Key Features
- SM through wall letterbox for classic wall installation
- Adjustable depth from 230mm to 380mm
- Suitable for A4 post when extended to 330mm
- Not suitable for single brick walls
- Made from galvanised steel
- Thermally powder coated for enhanced rust resistance
- Weatherproof design for external use
- Secure cylinder lock from Euro-Locks Lowe & Fletcher
- Supplied with 2 keys
- Inside window indicator shows when post has arrived
- Removable rear door for easy mail access
- Capacity from 7.9L to 13.2L, depending on wall depth
- Available in Matt Black, White, Copper, Silver RAL 9006, and Dark Grey
- 2-year warranty included
Product Specifications
- Product Name: SM Through Wall Letterbox Locking Weatherproof Galvanised Steel
- Product Type: Through Wall Letterbox
- Material: Galvanised Steel
- Finish: Thermally Powder Coated
- Installation: Through Wall
- Height: 110mm
- Width: 300mm
- Adjustable Depth: 230mm – 380mm
- Faceplate Size: 110mm x 295mm
- Letter Slot Size: 38mm x 262mm
- Maximum Mail Thickness: Suitable for mail up to 15mm thick
- Suitable Correspondence: A4 if extended to 330mm
- Capacity: 7.9L – 13.2L, depending on wall depth
- Weight: 2.91kg
- Colours: Matt Black, White, Copper, Silver RAL 9006, Dark Grey
- Lock: Secure cylinder lock, Euro-Locks Lowe & Fletcher
- Keys Supplied: 2
- Warranty: 2 years
- Important Installation Note: Not suitable for single brick walls
View our complete range of through the wall letterboxes h