Structural Opening – This is the total gap you need in the wall to slot our system in between. Whether brickwork, block work or studwork, if you leave this gap then our system will fit in!
FFL – Finished floor level. This is the point at which the cassette must be mounted and is where your floor covering reaches, whether wood, tile or carpet etc. If you do not do this then you may have to cut a bit off the door bottom! Raising the cassette is done by packing it out underneath.
Clear Opening – This is the ‘walk through’ area. So, when the door is fully open, this is the gap to walk through. Useful to know if you are trying to comply with Part M of Building Regulations.