Imagine Bi-Fold Door sashes glide along the rail, concertina and stow away using minimal space. Imagine Bi-Fold Doors have a completely flush finish and are available with a choice of 19 configurations, up to 7 sashes in width, bevelled or sculptured profile, mechanical or welded joints, inward or outward openings and a variety of thresholds allowing the door to be tailored to any specification. They can also be assembled on-site in difficult to access areas.