Standard interior gutter is made of stainless steel

Weld in the field at the end lap.

Overflow outlet is set for preventing overflowing in rainstorm

Rubber closure and sealant are used at interior gutter for preventing water leak into roof

Stainless steel screw is used for connecting roof panel and eave purlin

The collector box is specifically designed like a  sandglass according to hydromechanics theories to avoid vortex and speedup water's draining

A rectangle downspout is made of colored steel panel and totally matched with gutter and wall system. A remarkable  appearance is shown

The transition and roof panels are jointed together with a double-lock standing seam, this condition ensures the roof integrality and weather tightness. And the transition is specifically designed to adapt to roof movement

The ridge connection is specifically designed to allow ridge caps to accommodate roof panel's expansion/contraction. Metal closure used between roof panel and ridge cap ensures a better air-tightness. An ellipse hole made for connection of ridge cap that ensures the movement with the temperature's change, and ensures a precise place for erection.

The gable trim are factory cut and manufactured to ensure accurate installation and smooth trim

The inside angle support to strengthen the trim rigidity, and provide a good appearance

The gable trim and roof panels are jointed together with a double-lock standing seam, this condition assures the integrality of roof system and weather tightness

The gable trim are specifically designed to adapt to roof movement

Specifically design of the gable and the corner provide a smooth and beautiful shape of building