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Telescopic, Variable Flow Control Foundation and Crawl Space Vents Welcome to the future of foundation ventilation – and possibly the last vent you’ll ever need. Vortex™ – the first variable flow, telescopic vent that comes in two sizes and expands from 4.75 to 7 inches to fit 5, 6 and 7 inch walls and from 7.5 to 10 inches to fit 8, 9 and 10 inch walls. Plus, Vortex variable flow control means you choose between three models – thin manual, manual or automatic louvers.

Innovative vents feature solid steel turnbuckle that adjusts to fit almost any size wall.

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Adjustable and telescopic for maximum versatility Less SKU/inventory headaches – two sizes fit all High-density polyethylene construction Three models: thin manual, manual or automatic self-adjusting louvers A model to fit every budget Vortex Thin Manual BCV-80050

Vent allows user to adjust airflow using easy-to-access controls. Adjusts from 4.75 to 7 inches and fits 5, 6 and 7 inch walls, nominal or full size. Dimension: 19 1/4” W x 11 1/4” H Clear Vent Area (CVA) 31.4. Screen included.

Vortex Manual BCV-80150

Vent features easy-to-access controls that allow user to adjust airflow. Adjusts from 7.5 to 10 inches and fits 8, 9 and 10 inch walls, nominal or full size. Dimensions: 19 1/4” W x 11 1/4” H Clear Vent Area (CVA) 31.4. Screen included.

Waterproofing & Dampproofing• Drainage Board & Rolls • Drain Tile • Air Barrier System • Crack Injection & Anchoring Kits • Concrete Brick Sealer • Windows, Window Wells & Egress Wells • Flashing • Foundation Crawl Space Vents • Concrete Control Products • Safety Supplies • Spray Equipment Mar-flex Building Solutions 6866 Chrisman Lane Middletown, OH 45042 ©2009 Mar-flex Building Solutions. Vortex is a registered trademark of Mar-flex Building Solutions. All rights reserved.

Vortex Automatic BCV-80100

Vent automatically controls and regulates airflow based on environmental humidity. Adjusts from 7.5 to 10 inches and fits 8, 9 and 10 inch walls, nominal or full size. Dimensions: 19 1/4” W x 11 1/4” H Clear Vent Area (CVA) 60. Screen included. **BCV-80200 - Vortex Telescopic Vent Replacement Screen

Mar-flex Waterproofing and Basement Products For over 20 years, Mar-flex has helped transform damp, dark, dangerous basements into dry, light, safe living spaces. To learn more about the company’s comprehensive line of waterproofing and basement products, visit www.mar-flex.com or call 1-800-498-1411.


SPEC - Vortex Vent