triangular plastic cover 3d model

Create a precise 3D model of a small plastic triangular cover. The object is a right-triangle prism with base 7.2 cm, height 7.4 cm, and hypotenuse about 11.7 cm. Extrude to a uniform thickness of 2 cm. The front face is flat with slight matte texture and small edge fillets (1–2 mm). The top corner is cut with a 2 cm bevel forming a truncated edge. On the back, create a rectangular cavity about 1 cm deep, centered slightly lower. Inside the cavity, add two snap-fit clips aligned vertically, each about 2x2x2 cm with small hook lips. Include two vertical screw holes (5–6 mm diameter) through the body, positioned near the clips. Add a small angled cut (~1.7 cm) on one bottom corner. Use realistic proportions, clean topology, and matte black plastic appearance. Ensure watertight mesh suitable for STL export.