Cesco Products, the manufacturing leader in OEM walk-through access doors, would like to present you with a new standard for performance: The newly redesigned HF series access doors. This high performing line of doors consists of the HF (Standard), HFT (Thermal Break) and the HFZ (Zero Leak). They provide an attractive appearance for air-handling units while offering low leak, walk through and reachable access. These doors replace our existing product line and offer the following advantages:

• The best appearance: no screws, rivets, or caulk.
• A redesigned low profile door perimeter frame.
• The largest selection of door sizes, styles and options.
• The best performance: less than half the leakage of our nearest competitor.
• The HF "Standard" is Cesco's economical solution for easy access into your air-handling unit.

Cesco's HFTB "Thermal Break" is utilized for access among applications with high interior to exterior temperature differentials. The HFTB utilizes a thermal break and double gasket design for increased leakage performance and condensation resistance.
 
The HFZ "Zero Leak" is Cescos Product's high performance access door. I/T/S Warnock-Hersey certified the HFZ to provide 100% protection against air and water leakage at 2 inches of static pressure and 8 inches of rainfall per hour.