SL-1000 Rout & Return Caulked System This system has been in the marketplace for many years and is still widely used for economical solutions and on complex applications where dry systems are cost-prohibitive. The SL-1000 system utilises full-length, interconnecting perimeter extrusions which reinforce the panel flanges and provide self-alignment of panels. It seals the building by use of silicone sealant and can be used for panel designs ranging from the simplest to the most complex and sophisticated. Option B offers a simple male/female clip design.	System Characteristics Joint Type/Size Caulked joint, 1/2" (13mm) Testing Tested to ASTM E283, E331, E330 Wall Design Sealed or rainscreen & pressure equalized. Cost Factor Most economical system Two Options Option B is the most commonly used SL-1000 system. Option A is a caulked version of SL-2000.