RDUK55 Specification – 11mm of Insulation on the curvature – 205mm Square Box – 65mm Guides either side
RDUK55XL Specification – 14mm of Insulation on the curvature – 250mm Square Box – 75mm Guides either side
RDUK77 Specification – 19mm of Insulation on the curvature – 300mm Square Box – 70mm Guides either side (if over 3 metres 90mm guides either side)
The bottom lath will always protrude into the guides, so will reduce the drive through height by 55mm or 77mm respectively. For clear opening drive through height please allow for the box dimension and the bottom lath height (55mm or 77mm)
If the door is installed between the opening the drive through width will be reduced by twice the guide width, and the drive through height will be reduced by the box size and the bottom lath size.
Where will my door fit?
Internal Face Fix
Where there is sufficient side and headroom, the guide rail and roller assembly would be installed directly to the inside of the garage opening. This is recommended for most installations.
Installed between the opening and is good where there is limited side or headroom inside the garage. This will reduce drive through height noticeably.
External Face Fix
Fitted to the external face of the garage, useful where there is not enough space to install on the inside face, but where maximum drive though space is required.