Clamping set for the mounting profile, to mount the alu-profile between the sides. Therefore the sides need to make a angle of 90° with the floor.

Used mostly in Mobilhomes (=Campers). With this method you don't need to drill.

Hint : Lenght alu-profile (art. MP-100X16) = width between the sides minus 3 cm.
Ex. : If the width between the sides is 98 cm, Then you have to order 95 cm alu-profile (art. MP-100X16). 

Attention : Be sure the sides are strong enough, so you don't destroy them by clamping