The corner design of the DURAFLEX KF expansion and movement joint profile is designed to cover the floor/wall or wall/wall joints. Please order the retaining clips separately depending on the joint depth. For floor applications we recommend the following formats: Joint width 15-20 mm = profile width 50 mm (retaining clip type A) Joint width 20-30 mm = profile width 60 mm (retaining clip type A) Joint width 25-35 mm = profile width 70 mm (retaining clip type B) Joint width 30-45 mm = profile width 90 mm (retaining clip type B) For wall applications we recommend the following formats: Joint width 15-30 mm = profile width 50 mm (retaining clip type A) Joint width 20-45 mm = profile width 60 mm (retaining clip type B) Joint width 30-45 mm = profile width 70 mm (retaining clip type B) Joint width 35-45 mm = profile width 90 mm (retaining clip type B) Joint width 40-45 mm = profile width 140 mm (retaining clip type B) Please note the joint depth.