Our Caterpillar Pleated Systems are available in do-it-yourself (DIY) packages with complete assembly instructions You no longer need to order your screen with respect to specific measurements. Our caterpillar pleated kits can be adjusted to the required measurements in few simple steps. Aria Solutions Caterpillar Pleated Systems are 40 cm (15.74'') reducible in height or width. The thin PVC bottom rail allows the screen to be installed flat to the ground and thus avoid any barrier that could introduce any hazards to trip or step over. This feature also makes the Caterpillar Pleated screens wheelchair accessible.