The draught-free letterbox in the Netherlands
Homebox has developed a draught-free letterbox that helps reduce heat loss through your front door. While traditional letterboxes often cause draughts, cold air and noise, Homebox is designed as an airtight, insulating solution for homes where comfort and energy efficiency truly matter.
With Homebox, you choose a solution that combines technology, ease of use and design in one product.
Why we created Homebox
Many homes lose heat through the letterbox without people realising it. It’s a small detail that is often overlooked when insulating a home.
Homebox was developed with one clear idea: if you want to properly insulate a home, the letterbox should be taken seriously too. Not a simple brush or loose inner flap, but a solution that truly improves comfort indoors.
How it started
Over 20 years of experience led to the development of an innovative letterbox that truly works. In 2015, TRM Trading BV was founded with a clear goal: to create an airtight letterbox that keeps warmth inside and draughts out.
After years of designing, testing and refining, Homebox was officially launched in 2017. Since then, it has helped both homeowners and professionals across the Netherlands improve their front doors.
The technology behind Homebox
Homebox is designed using a smart principle with two flaps and airtight sealing. This creates an insulating air chamber that retains heat and prevents cold air from flowing inside.
This sets Homebox apart from traditional letterboxes. It not only reduces draughts, but also improves comfort and creates a quieter indoor environment. Independent tests also confirm its strong performance in insulation, airtightness and sound reduction.
What makes Homebox different
