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Dynamic 1.5 Hour Rated Dampers

UL 555 classified 1½ hour fire rating

Building codes require fire dampers to maintain the fire-resistance ratings of walls, partitions, barriers, and floors when penetrated by ducts or other air transfer openings. Fire dampers are UL 555 classified with a fire-resistance rating of 1½ hours. Dynamic-rated-fire dampers are used with HVAC systems that remain operational during a fire emergency.

DFD-110

DFD-110

This damper has a 2³/₁₆ inch narrowline frame with pressure up to 4 in. wg, velocity up to 4,000 fpm and temperature up to 286°F.

VIEW DFD-110
https://catalog-api.greenheck.com/api/product/en-us/584
DFD-150

DFD-150

This damper has a 3¹¹/₁₆ inch narrowline frame with pressure up to 4 in. wg, velocity up to 4000 fpm and temperature up to 286°F.

VIEW DFD-150
https://catalog-api.greenheck.com/api/product/en-us/178
DFD-150x Series

DFD-150x Series

Integral sleeve (12 and 16 in.) with pressure up to 4 in. wg, velocity up to 4000 fpm and temperature up to 286°F.

VIEW DFD-150x Series
https://catalog-api.greenheck.com/api/product/en-us/585
DFD-210

DFD-210

Multi-blade 3V style with pressure up to 10 in. wg, velocity up to 4000 fpm and temperature up to 350°F.

VIEW DFD-210
https://catalog-api.greenheck.com/api/product/en-us/580
DFDAF-310

DFDAF-310

Multi-blade airfoil with pressure up to 8 in. wg, velocity up to 4000 fpm and temperature up to 350°F.

VIEW DFDAF-310
https://catalog-api.greenheck.com/api/product/en-us/581
DFDR-510

DFDR-510

Round blade with pressure up to 4 in. wg, velocity up to 2000 fpm and temperature up to 286°F.

VIEW DFDR-510
https://catalog-api.greenheck.com/api/product/en-us/181
ODFD-150

ODFD-150

Out-of-wall design with pressure up to 4 in. wg, velocity up to 4000 fpm and temperature up to 286°F.

VIEW ODFD-150
https://catalog-api.greenheck.com/api/product/en-us/578
SEDFD-210

SEDFD-210

Multi-blade 3V style with 316 stainless steel construction and pressure up to 10 in. wg, velocity up to 4000 fpm, and temperature up to 350°F.

VIEW SEDFD-210
https://catalog-api.greenheck.com/api/product/en-us/579
SSDFD-150

SSDFD-150

This damper has a 3¹¹/₁₆ inch frame with 304 stainless steel construction and pressure up to 4 in. wg, velocity up to 2000 fpm and temperature up to 286°F.

VIEW SSDFD-150
https://catalog-api.greenheck.com/api/product/en-us/582
SSDFDR-510

SSDFDR-510

Round blade with 304 stainless steel construction and pressure up to 4 in. wg, velocity up to 2000 fpm and temperature up to 286°F.

VIEW SSDFDR-510
https://catalog-api.greenheck.com/api/product/en-us/583