High performance sliding doors
Built for Heavyweight Panels
INOWA is a bottom-rolling sliding door system engineered for large, heavy sashes and demanding installations.
It combines robust construction, advanced sealing and smooth operation with features designed to simplify manufacture, fitting and everyday use, delivering a premium result for both installer and end user.
Weather tested
Independently tested to resist wind, rain and air infiltration, delivering dependable performance in exposed and demanding environments.
Security tested
Tested to recognised security standards, providing confidence for installers and peace of mind for end users.
Surround locking points
Multiple locking points engage around the sash perimeter, enhancing security, sealing consistency and long-term door performance.
Up to 400kg sash weight
Engineered to support sash weights up to 400kg, ensuring smooth, reliable operation for large, heavy glazed door panels.
Scheme A
Scheme A enables wide-span openings up to 6110mm, ideal for large residential or light commercial sliding door applications.
Scheme C
Scheme C is suitable for openings up to 6050mm wide, without compromising performance or stability.
Slim profile & low threshold
Slim profiles maximise glass area, while the low threshold improves accessibility and creates a clean internal–external transition.
Soft close as standard
Soft-close functionality is included as standard, ensuring controlled, smooth closing and reduced wear on components. Soft open also available.
Tooling available
Specialist tooling is available for hire, supporting accurate manufacture, efficient installation and consistent, high-quality results.
INOWA
Configuration Options
There are a number of configuration options available from Coastal's INOWA, depending on the size of the system and the preferences of the customer.
Scheme A
Max sash rebate width for Scheme A 200kg is 2 metres, and Scheme A 400kg is 3 metres
Max sash rebate height for Scheme A (both 200kg and 400kg) is 2.5 metres
Scheme C
Max sash rebate width for Scheme C (both 200kg and 400kg) is 1.5 metres
Max sash rebate height for Scheme C (both 200kg and 400kg) is 2.5 metres
INOWA Sliding Door System
Performance
- Water tightness (driving rain) Class E1500 (BS EN 1027:2000, BS EN 12208:2000)
- Air permeability Class 4 (BS EN 1026:2000, BS EN 12207:2000)
- Wind resistance Class C5 (BS EN 12211:2016, BS EN 12210:2016)
- Burglar resistance Class RC2
- Corrosion protection Class 5 (EN ISO 9227, EN 1670)
- British Board of Agreement (BBA) Test Report (PAS:24)
Next steps
INOWA Brochure
Download the INOWA brochure for a complete overview of the system, including:
- key features
- configurations
- and performance benefits
All presented in a clear, easy-to-reference format.
Pricing Example
Scheme A (200kg)
Prices may vary but the table below gives an idea of a quote for a Scheme A (one fixed leaf and one sliding leaf) 200kg sliding door system.
| Sash Rebate Height (mm) | Sash Rebate Width (mm) | ||
|---|---|---|---|
| 710-1060 | 1061-1493 | 1494-2000 | |
| 1801-2000 | £795 | £849 | £989 |
| 2001-2100 | £799 | £829 | £965 |
| 2101-2400 | £845 | £875 | £1019 |
| 2401-2500 | £855 | £885 | £1025 |
Prices shown are intended as a guide only and are subject to change without notice. To get a full and accurate quote, simply click here.
Tooling for hire
Dedicated INOWA tooling is available for hire, improving accuracy, efficiency and installation quality without the cost or storage of ownership.
- Efficiency – Achieve swift installation, saving you valuable time and effort
- Accuracy – With precise measurements and alignments, your sliding door system operates smoothly and securely
- Professional results – Benefit from professional quality results that delight customers
Access the tooling you need when you need it without having to purchase and store expensive equipment with our hiring service, or purchase your own bespoke set for multiple installations.
Tooling FAQs
Tooling
Tooling is available for hire from Coastal for £395 a week and is available to buy from £5,000.
Coastal's bespoke tooling is securely packaged in bespoke wooden boxes and delivered to your chosen workshop address via courier. Each piece of tooling comes with go/no go gauge.
Coastal has multiple sets of tooling available for hire. We work with a range of couriers to offer speedy and efficient delivery. Get in touch with Coastal's friendly team on 01726 871 025 to discuss delivery options.
You can hire a set of INOWA tooling for as long as you need.
Simply get in touch with our friendly team on 01726 871 025 or drop us an email.
Cropping Tool
The cropping tool enables clean, precise trimming of components, ensuring accurate sizing and a professional finish every time.
Tooling
Purpose-designed INOWA tooling to support accurate machining, consistent profiles and efficient production for reliable, high-quality installations.
Jigs
Precision jigs ensure correct positioning and alignment, improving accuracy, repeatability and overall door performance.
Downloads
Scheme A
Door width & height calculator
An easy-to-use calculator to accurately determine door width and height using frame height, door leaf height and rebate dimensions.
Component list
A complete list of all components required to manufacture and assemble the INOWA sliding door system.
Scheme A Plan
Click to view a technical Scheme A side position plan of the Inowa sliding door system.
Scheme A Side Elevation
Click to view an end elevation technical drawing of the Inowa sliding door system, Scheme A.
Downloads
Scheme C
Door width & height calculator
An easy-to-use calculator to accurately determine door width and height using frame height, door leaf height and rebate dimensions.
Component list
A complete list of all components required to manufacture and assemble the INOWA sliding door system.
Scheme C Plan
Click to view a technical Scheme C side position plan of the Inowa sliding door system.
Scheme A Side Elevation
Click to view an end elevation technical drawing of the Inowa sliding door system, Scheme C.
FAQ
Scheme A
For Scheme A, the maximum sash rebate width is 2 metres for 200kg sashes and 3 metres for 400kg sashes.
The maximum sash rebate height for Scheme A, for both 200kg and 400kg systems, is 2.5 metres.
Scheme C
For Scheme C, the maximum sash rebate width is 1.5 metres for both 200kg and 400kg systems.
The maximum sash rebate height for Scheme C, for both 200kg and 400kg systems, is 2.5 metres.
Support
Coastal Group provides ongoing technical support at every stage, from initial enquiry and specification through to ordering and installation.
You can download a Scheme A or Scheme C door width and height calculator to assist with accurate specification.
Yes. A table of parts is available to download above for both Scheme A and Scheme C configurations.
Yes. You can download Scheme A or Scheme C plans above as well as side elevation drawings for detailed reference.
Yes. Installation guides are available to download above for both the 200kg and 400kg INOWA systems. There is also a video walking you through how to install the system.
Yes. You can download the BBA certificate, 10-year Accoya warranty, and hardware warranty above.
Tooling
Yes. Coastal Group offers a dedicated INOWA tooling service to simplify production and installation. The tooling is designed to improve efficiency and accuracy, helping you achieve consistent, professional results without investing in expensive equipment.
INOWA tooling supports faster production, precise machining and reliable installation, ensuring smooth door operation, secure fitting and a high-quality finished result for your customers.
INOWA tooling is available to hire from £395 per week. Alternatively, a bespoke tooling set can be purchased from £5,000 for repeat installations.
All tooling is securely packed in bespoke wooden boxes and delivered by courier to your workshop. Each tool includes a go/no-go gauge for accuracy.
Coastal Group holds multiple tooling sets and works with a range of couriers to offer fast, reliable delivery. Contact the team to discuss availability and timescales.
Tooling can be hired for as long as required, providing flexibility for both short-term and ongoing projects.
Simply contact Coastal Group’s technical team by phone or email. Our knowledgeable staff will advise on tool selection, usage and maintenance to support your project.
INOWA Installation Guide
Watch the step by step guide to fitting your INOWA sliding door system below.
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