Flexed wall or ceiling facing

Claim 1

WALL OR CEILING FACING COMPRISING: A PLURALITY OF RESILIENT THIN WALLED ELONGATED PANEL ELEMENTS IN SPACED SIDE BY SIDE RELATIONSHIP, EACH OF SAID PANEL ELEMENTS HAVING A FACE WITH UPSTANDING SIDE WALLS ALONG THE ELONGATED EDGES THEREOF, SAID SIDE WALLS BEING DIRECTED REARWARDLY RELATIVE TO THE FACE, AND SAID SIDE WALLS HAVING ON THEIR EDGES REMOTE FROM SAID FACE FLANGE PORTIONS BEING ANGLARLY RELATED TO SAID SIDE WALLS, SAID PANELS HAVING A SPACE BETWEEN THEIR ADJACENT EDGES AND SAID PANEL FACES BEING CO-PLANAR, SUPPORTING RAILS RUNNING TRANSVERSELY TO THE DIRECTION OF THE PANEL ELEMENTS, SAID SUPPORTING RAILS HAVING ENGAGING MEANS SPACED THEREALONG AT PANEL WIDTH INTERVALS AND SAID SIDE WALLS BEING FLEXTED TO PRESS RESILENTLY SAID FLANGE PORTION AGAINST SAID ENGAGING MEANS THEREBY DISENGAGEABLY HOLDING THE PANEL ELEMENTS, SAID ENGAGING MEANS INCLUDING AN ELONGATED STRIP ELEMENT LYING BETWEEN ADJACENT SPACED PANELS BEHIND SAID FLANGE PORTIONS, AND HELD IN PLACE BY SAID ENGAGING MEANS, SAID STRIP ELEMENT HAVING A PLANE FRONT SIDE PORTION PARALLEL TO SAID PANEL FACE PANEL BETWEEN WHICH AND SAID ENGAGING MEANS THE SIDE WALL FLANGES ENGAGED.