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Origin Interal Door Range OI-30

The Origin OI-30 Internal door range offers a sleeker and more modern design than many other internal doors on the market today, offering a bespoke and classic way to divide your space.


Endless customisation possibilities…

With the Origin OI-30 internal door range, you can have complete say in how your Georgian-style internal door is designed.

The Origin OI-30 allows you to choose every feature - from selecting chamfered or square beading options, choosing your perfect handle, specifying the right configuration and size for you, and more. This all depends on your preferred door style and the space you have available. You may also want to match your internal room divider to the interior design of your home.

We offer a variety of options to choose from when it comes to your configuration including, handle style and colour, open in or out, glazing bars configuration, beading and blackout panel or kickplate. On top of this you can choose between a single door, fixed screen, french door or even a combination of these to create a unique corner design.



  • Frame Depth 40mm
  • Frame Width 30mm
  • Sash Depth 32mm
  • Width 30mm
  • Glass Divide Depth 31mm
  • Glass Divide Width 35mm
  • Threshold clearance 10mm
  • Corner Post 47mm depth x 47mm width
  • Corner configuration available
  • 35mm glazing bar
  • Square or chamfered bead
  • Flexible design options – can be a combination of fixed, single, French or corner doors
  • Accommodates 4mm, 6mm and 6.8mm glazing
  • Purpose-designed corner post
  • Up to six horizontal and two vertical splits
  • Lock block available with or without locking
  • Turn and release lock
  • Kickplate or panels available


  • Minimum Sash Size Width Single Door  (mm) 300
  • Minimum Sash Size Height Single Door (mm) 1500
  • Maximum Sash Size Width Single Door (mm) 1000
  • Maximum Sash Size Height Single Door (mm) 2500
  • Minimum Sash Size Width French Door (mm) 300
  • Minimum Sash Size Height French Door (mm) 1500
  • Maximum Sash Size Width French Door (mm) 1000
  • Maximum Sash Size Height French Door (mm) 2500

Relax, Origin has you covered

Our Origin Aluminium doors are covered by a 20-year manufacturer guarantee, so you can relax knowing that your windows will last for years to come.

Alternative Shades

Our collection of Origin OB-49 doors can come in up to 150 RAL colours and modifiable designs. In order to give it a flawless finish, the highest grade powder coating is applied to the aluminium, with a durable yet smooth finish, it offers the benefit of being highly resilient to the elements.


10 Year Guarantee

All of our double-glazed casement windows are easy to maintain and keep looking like new, partly due to their durability and longevity. We’re so confident in our windows that we offer a ten-year guarantee as standard.

Shop OI-30 Doors with Diamond Windows

When searching for double-glazing specialists in the West Midlands, you needn’t look further than Diamond Windows. We’re well equipped in supplying and installing aluminium doors, so please don’t hesitate to get in touch regarding your door needs. Our expert team will be more than happy to advise you about our OI-30 door range or any other door types.

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“Very pleased with work carried out. Approachable staff very pleasant.”

“The Diamond Window guys installed our new front door and sidescreen and did a fantastic job. They were highly skilled and also very tidy. I would use them again”

Trust our 5-Star Reviews

“Excellent selection, first class advice and outstanding fitting. We wouldn't go anywhere else for double gazing projects.”

“From design to completion , excellent service,friendly and competent tradesmen.”

Contact us
Diamond Windows, Unit 22, Northstreet I.E, Droitwich,West Midlands, WR9 8JB
Company Reg: 5367399
Open Hours
Mon to Fri: 9am to 4.30pm
Sat: 9am-1pm
Sun: By appointment