Mila and Whiteline Manufacturing expand their partnership on Lift & Slide patio doors
Mila and Whiteline Manufacturing have strengthened a long-standing partnership by bringing Mila’s Harbour Collection of handles to Sheerline Prestige Lift & Slide patio doors. For homeowners, this type of system is often chosen for its contemporary look, smooth operation, and strong connection between indoor and outdoor living.
Whiteline selected the stainless-steel Harbour range for its modern appearance, premium material specification, and the testing behind it, which helped the doors achieve PAS24 accreditation. While homeowners may not see the testing process, it plays an important role in the overall performance of doors intended for everyday use and added security.
What the Harbour Collection offers
The Harbour Collection is available in 10 finishes, making it easier to match different interior and exterior design schemes. That flexibility can be especially useful for property owners who want the door hardware to blend in with the rest of the project rather than stand out.
The handles are made from 316-grade stainless steel, a material chosen for its strong corrosion resistance. According to Mila, this makes the range suitable for both internal and external use and helps protect the hardware from weather exposure over time.
The range is also certified to BS EN 1670 Grade 5. Mila says each handle is exposed to 1,000 hours of salt spray testing, which is intended to demonstrate long-term resistance to corrosion. For homes in coastal areas, or for doors exposed to harsher weather, durable hardware can be an important part of maintaining comfort and appearance.
Security testing and door performance
Mila says the handles have also been tested for resistance to forced entry, including drill resistance, lock picking, snapping, and tool manipulation. This kind of testing supports the overall security performance of the door system, which is an important consideration for homeowners, apartment blocks, and small commercial properties alike.
It is worth noting that a secure door depends on the complete system, not just one component. Good performance also relies on proper measurement, correct installation, compatible hardware, and suitable glazing and frame specification. For that reason, qualified professionals should always handle assessment and installation.
Why lift and slide systems continue to grow
Julie Holmes, sales director at Mila, said the collaboration reflects growing demand for lift and slide systems. These doors are often valued for their luxury feel, slim sightlines, and smooth operation, making them a popular choice where owners want wider openings and a cleaner modern finish.
For many property owners, lift and slide patio doors can offer several practical advantages:
- Easy movement for large door panels
- A sleek, contemporary appearance
- Good access to terraces, gardens, or balconies
- Hardware and finish options that suit different design styles
Partnership built on experience
Leighton Baitup, head of product, Technical, at Whiteline Manufacturing, said the company has worked with Mila for more than two decades and values the relationship highly. He noted that achieving PAS24 accreditation on the Sheerline Lift & Slide system was no small task and credited the quality of Mila’s hardware.
He also highlighted that Mila’s Supa range is already well known in the industry, and that the Harbour range adds another option for manufacturers working with Sheerline systems.
This latest project shows how the right hardware selection can support both the style and performance of a patio door system. For homeowners, the result is often a better balance of appearance, durability, security, and day-to-day comfort.
Useful points to consider before choosing patio doors
- Check whether the door is designed for your exact opening size and building type
- Ask about hardware material if the door will be exposed to rain, wind, or coastal air
- Confirm that security performance applies to the full system, not just the handle
- Use qualified installers and professional measurement to help avoid fitting issues
- Consider finish options that match the rest of the property
For more information on Whiteline Manufacturing, visit https://whiteline.co.uk/.
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