NO EXPLANATION IS ATTACHED TO PANEL INSTALLATION. THE ONLY COMMENT IS WRITTEN IN GERMAN. I HAVE TAKEN TO 6 TO PUT MY WINDOW THAT MEASURE 3 METRES (2 X 150 cm) I HAVE 70 CM WALL OR WANT EACH SIDE FOLDING PANELS WHEN THE SUN DO NOT TOO STRONG TAPE AND I DO NOT KNOW HOW TO THESE BOARDS NOW I NEED RAILS QUELLLE BUT SIZE SHOULD I TAKE? MOUNTING AND WHAT? CA EXTENSION awfully NOTE !!!! WELL ARE SOLD RAILS ON THE WEBSITE OR AMAZON I PURCHASED THE SIGNS BUT IT'S REALLY EXPENSIVE! THINK ANY CA ME I DO NOT HAVE ENOUGH BEFORE BUYING MY reflected. DOUBLE CURTAINS BEING EXCLUDED FOR ME, IF SOMEONE CAN GIVE ME ADVICE FOR LAYING IT WOULD BE NICE! THANKS