For inaccessible ducts, when access panels are not a viable or appropriate architectural option, Roto-Twist® has the answer. The inside the air stream solution allows for airflow control without any visible cables or access panels. The outside the air stream solution requires only one of several paintable wall or ceiling termination plates that can be as small as a quarter, and placed anywhere. This design sensitivity explains why we have installed over 250,000 units in museums, hotels, casino’s, universities, corporate headquarters, retail stores, residences and many other structures throughout the USA, Canada and Europe. See our Project List for a sampling of the projects that have used our products.

The product line offers recessed, or minimally visible access points and is easy to install and operate. Our patented technology provides a simple, one-of-a-kind solution for tough design problems.

The Roto-Twist® line of cable dampers is designed to allow achievement of properly balanced airflow in environments that do not have direct access to air ducts. HVAC system balancing ensures that all airflows are in compliance with specifications and drawings, thereby ensuring occupant comfort and overall system efficiency. It is an integral part of HVAC system commissioning, which is a requirement (EA Prerequisite 1) for LEED® for New Construction certification and a credit (EA Credit 2.1-2.3) for LEED® for Existing Buildings: O&M certification.

The Roto-Twist® universal damper drive and the patented Roto-Twist® cable operated radial damper are the key components that make remote airflow balancing simple. The universal damper drive attaches to any shaft operated damper and is operated by a cable that can run up to 100 feet from the damper to a termination point. The radial damper is a self-contained one-piece unit that can be installed inside the air stream, up to 12 feet from the air outlet.

And MAT's new Electro-Balance® battery powered dampers allow greater on-site flexibility in determining the interface point for damper adjustment. Wiring is easily routed through crowded ceiling spaces and can run upwards of 1000 ft, making centralization of balancing damper operation an easy alternative.