Preferred Engineering introduces HI-FLO a engineered weeper designed to maximize flow rate when experiencing the low pressures found in window and sliding door sills.

The cover automatically opens to let water escape, then uses a positive-close action to block drafts and insects from entering the house. Compatible with most window and sliding door designs, HI-FLO reduces water build up and the risk of water damage. The system is specially engineered to give maximum flow rates and drainage performance, even when working on a 45º angle.

Unlike other drainage weepers on the market today which are made of nylon, HI-FLO is fabricated from polycarbonate, preventing swelling from water build-up and causing malfunction of the weeper door.

Increase profitability and competitiveness by offering your customers a product with a difference.

Preferred Engineering is available to help you customize HI-FLO weepers to fit your needs. Product trouble-shooting in the field or in the manufacturing plant, complete 3D Solid Edge design equipment and in-house testing facilities are all available to help you give your customers maximum performance quickly and cost-effectively.

At Preferred Engineering, we’re committed to providing innovative solutions to your window hardware problems. Contact us today to find out how we can help you make the right choice.