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Polycarbonate connector profile could connect sheets and won't affect the light through the sheet connection points.

Features :                

Easy-To-Install.  Attach Base to purlins or rafters—Screw on Base —Lay on Polycarbonate sheet -- attach Cap.

Leakproof. Excellent sealing properties in roofs and walls.

Light, flexible, most economic and easy to install to save a lot of labor cost.

Color : Clear ,bronze ,grey ,opal ,green ,blue etc.