Plastic roof cap No name CSK XXX 71x71G — single-piece ventilation/closure cap

Plastic roof cap No name CSK XXX 71x71G — single-piece ventilation/closure cap is a one-piece plastic component intended to seal or provide a protective cover for square openings measuring 71 × 71 mm. Designed for use on ducts, vents and roof penetrations, the cap offers a lightweight and corrosion-resistant solution for both external and internal applications where a compact square closure or vent cover is required. The product is supplied as a single unit and fits openings with the stated dimensions.

Advantages

The cap is manufactured from plastic, which ensures resistance to rust and low weight for easier handling and installation. As a single-piece design it reduces the number of joints and potential leak points, simplifying maintenance. Its square shape matches standard 71 × 71 mm openings and provides a neat, consistent finish on roofs or ventilation surfaces. The material tolerates typical environmental exposure when used as intended.

Suitable for

• Sealing square roof penetrations and small duct outlets
• Protective cover for exterior or interior ventilation openings
• Temporary or permanent closure of 71 × 71 mm cutouts in walls or panels
• Lightweight applications where corrosion resistance is needed

Key specifications

• Shape: square
• Compatible opening size: 71 × 71 mm
• Construction: single-piece plastic
• Intended use: closure or ventilation cover for ducts, vents and roof penetrations
• Weight: lightweight (plastic material)

How to use

Place the cap over the matching 71 × 71 mm opening ensuring the edges align evenly with the cutout. Secure the cap according to the mounting method appropriate for the installation surface — for example with suitable screws, adhesive sealant or mechanical fasteners compatible with plastic and the substrate. Ensure a flush fit and check for gaps; apply a compatible sealant if a watertight installation is required. For ventilation use, confirm airflow requirements and any local building regulations before final installation.

Usage recommendations

For long-term exterior installations, inspect the cap periodically for UV deterioration or mechanical damage and replace if deformation or cracking is observed. Use fasteners and sealants that are recommended for plastic components and the specific roof or wall material to maintain secure attachment and weather resistance.