4 in x 6 in x 16 in Harlequin Oval Vent Block

Description

4″ x 6″ x 16″ Harlequin Oval Vent Block Specialized Ventilation Concrete Block Professional-grade concrete masonry unit featuring an oval ventilation opening for controlled airflow in crawl spaces, foundations, and architectural applications. Key Benefits Controlled ventilation Uniform dimensions Oval opening design Moisture management Natural air circulation Durable construction Insect screening compatible Architectural versatility Technical Specifications Dimensions: 4″ x 6″ x 16″ nominal Actual Size: 3-5/8″ x 5-5/8″ x 15-5/8″ Weight: Approximately 18-22 lbs Material: Portland cement and aggregates Opening: Centered oval ventilation port Compressive Strength: 1,900+ PSI Color: Standard gray concrete Meets ASTM C90 standards Perfect For Crawl space ventilation Foundation venting Basement air circulation Garage air exchange Garden walls Decorative fencing Equipment enclosures Climate control structures Installation Instructions Prepare level base or footing Mix mortar to proper consistency Place in wall system with opening horizontal Ensure vent alignment with design specifications Maintain 3/8″ mortar joints Install mesh backing if insect protection is needed Check for level and plumb Seal around opening edges if required Pro Tips Calculate required ventilation area for proper air exchange Consider installing vent screens to prevent pest entry Position vents at opposite sides of structures for cross-ventilation Space multiple vents according to local building codes Consider weather exposure when positioning Clean openings periodically to maintain airflow Pair with solid blocks for controlled ventilation patterns vent block, concrete vent, oval vent block, foundation ventilation, crawl space vent, masonry vent, air circulation block, ventilation CMU

Key specifications

• Dimensions: 4 in x 6 in x 16 in nominal.; Actual Size: 3-5/8 in x 5-5/8 in x 15-5/8 in.; Weight: Approximately 18-22 lbs.; Material: Portland cement and aggregates.; Opening: Centered oval ventilation port.; Compressive Strength: 1,900+ PSI.; Color: Standard gray concrete.