Modular louver structure

Claim 1

A LOUVER STRUCTURE COMPRISING A PLURALITY OF TRANSVERSELY-SPACED, LONGITUDINALLY-EXTENDING HORIZONTAL FIRST BARS OF SUBTANTIALLY V-SHAPED TRANSVERSE CROSS-SECTION AND INCLUDING UPWARDLY DIVERGING FIRST ARMS HAVING TRANSVERSELY-ALIGNED VERTICAL SLOTS FORMED IN THE UPPER SECTIONS THEREOF AND EXTENDING TO POINTS ABOVE THE LOWER EDGES THEREOF, A PLURALITY OF LONGITUDINALLY-SPACED, TRANSVERSELYEXTENDING HORIZONTAL SECOND BARS OF SUBSTANTIALLY V-SHAPED TRANSVERSE CROSS-SECTION REGISTERING WITH CORRESPONDING OF SAID FIRST SLOTS AND INCLUDING UPWARLDY DIVERGING RESILIENT SECOND ARMS AND HAVING TRANSVERSELY-SPACED, VERTICAL SLOTS FORMED IN THEIR LOWER BORDERS EMBRACING THE LOWER BORDERS OF SAID FIRST BARS BELOW THE APICES OF SAID FIRST SLOTS AND PROTUBERANCES FORMED IN SAID FIRST ARMS ADJACENT THE APICES OF SAID FIRST SLOTS UNDER PRESSURE OF THE ASSEMBLY OF SAID FIRST AND SECOND BARS AS THEY ARE PRESSED INTO MATING REGISTRY, AND PROTUBERANCES PROJECTING OUTWARDLY FROM THE OUTER FACES OF SAID FIRST ARMS INTO FIRM ENGAGEMENT WITH THE EDGES OF SAID SECOND SLOTS.