Mestek Commercial Damper and Louver Group

06/12/2026

The Mestek Commercial Damper and Louver Group has released an update to our standard lead times. Please review the official Lead Time Schedule for details.

Log in to SalesAssistant and access the PDF document attached to the newest Bulletin for June 12th. Thank you for choosing MCDLG and our brands!

06/12/2026

Learn how combination stationary louvers protect interiors from severe weather events and hurricanes. These heavy-duty louvers offer protection and performance in one package! Read more on the MCDLG Newsstand. First published July 2021.

Learn how combination stationary louvers protect interiors against wind driven rain. These louvers offer protection and performance in one louver! 

06/10/2026

In our new Condenser, we take a quick look at AMCA Standard 550. Get a refresher on AMCA’s wind driven rain standard for hurricane louvers. "AMCA 550 Quick Review" is now available on the MCDLG Newsstand!

In this Condenser, we take a quick look at AMCA Standard 550. Get a refresher on AMCA’s wind driven rain standard for hurricane louvers.

06/09/2026

AMCA Standards 540 and 550 are the latest testing standards for hurricane louvers. But are they better? This article covers AMCA 540-550 and compares them to the original Miami-Dade Standards. Learn more on the MCDLG Newsstand. Published January 2020.

This article covers AMCA 540, AMCA 550, and the original Miami-Dade Standards, including the missile impact tests and wind driven rain tests.

06/05/2026

Looking to refresh your memory on air control dampers? Try our free continuing education course. Complete it at your own pace and earn 1.25 PDHs for ASHRAE. Meet your continuing education requirements with MCDLG and AEC Daily.

Air control dampers are an essential component of a building’s HVAC system, regulating heating, cooling, and ventilation...

06/04/2026

An upcoming project calls for a damper with a “PC/SO” actuator. That is “power closed, spring open”. Read this Condenser article for more on actuator closure types.

What does “spring closed” mean? In this Condenser, we will explore the various closure types for air control and life safety dampers. Learn more here.

06/02/2026

Published July 2021 – The AFD-20 series control dampers are our most popular models. These dampers sport airfoil blades and a variety of configuration options. Learn more in this quick Condenser article, now on the Newsstand.

In this Condenser article, we examine the AFD-20 series, MCDLG's most popular control dampers. Choose a control damper built for air performance. 

05/29/2026

Originally published September 2018 – Drain channels keep water moving to the sill, where it flows out of the louver’s face. However, the sill can flood if there is too much rain. Learn how drain pans help prevent backsplash on the Newsstand.

This article details drain pans and sill extensions, then explains which is best for draining water from the louver. Learn more on the MCDLG Newsstand.

05/28/2026

Louvers can go anywhere. They can even be installed in a window with the right accessory. In this Condenser, we look at glazing adapters and how they work. First published April 2024.

Louvers can go anywhere. They can even be installed in a window with the right accessory. In this Condenser, we look at glazing adapters and how they work.

05/26/2026

Published November 2022 - Location, location, location. It’s also important to consider when choosing louvers. Read about the four questions to ask about louver location, now on the MCDLG Newsstand.

Performance is important, and so is location. You need louvers that fit. Here are four questions to ask about your installation area.