Wall Collar AWENTA KP75-27 rectangular 75×150 mm for duct connection

AWENTA KP75-27 rectangular wall collar 75×150 mm is designed to provide a neat, airtight transition between a wall opening and rectangular ventilation ductwork. Intended for HVAC and exhaust systems, this collar suits installations where a compact rectangular penetration is required. The product supports common residential and light commercial ventilation applications and is compatible with standard rectangular ducts of matching dimensions.

Advantages

The rectangular wall collar ensures a stable, flush connection that reduces air leakage at the wall penetration. Its compact 75×150 mm profile simplifies installation in limited spaces and enables a consistent alignment with ductwork. The unit is constructed for durability and easy handling during mounting, which helps maintain the integrity of the ventilation run and supports efficient airflow.

Suitable for

• Connecting rectangular ventilation ducts through exterior or interior walls
• Domestic kitchen and bathroom exhaust systems
• Light commercial HVAC and ventilation installations

Key specifications

• Shape: rectangular wall collar
• Nominal collar opening size: 75×150 mm
• Intended use: duct-to-wall connection for ventilation and exhaust systems
• Application environment: residential and light commercial interiors

How to use

Prepare the wall opening to match the collar dimensions and ensure surrounding structure is stable. Insert the collar into the opening and align it with the duct direction. Secure the collar to the wall using appropriate fasteners for the wall material, and connect the rectangular duct to the collar, sealing joints with suitable duct sealant or tape to achieve an airtight connection. Verify alignment and airflow before completing any finishing around the collar.

Usage recommendations

Use corrosion-resistant fasteners and suitable sealants compatible with ventilation systems to maintain airtightness. Check local building codes and follow HVAC installation best practices, including ensuring adequate insulation and avoiding sharp bends near the collar that could restrict airflow.