Louvers provide a ventilation when inserted into a hollow metal or architectural wood door. There are two types: AFDL = Fixed Blade Door Louver (Non-Rated) and FLDL = Fusible Link Door Louver (fire rating up to 90min). Due to their ventilation capabilities, louvers should only be installed in a door with a fire rating higher than 20 minutes.
These louvers cannot maintain a 90 minute rating when installed in Light Commercial Doors (RF or SE Series). While the Light Commercial doors have a 90 minute rating, a thinner steel skin than Hollow Metal Commercial doors is used giving less integrity to the cut area around the louver. The unit can only be rated to 45 minutes.
No matter what, do NOT use these louvers in a 20 minute door!
Louver TypesAFDL = Fixed Blade Door Louver (Non-Rated) and FLDL = Fusible Link Door Louver (up to 90min). AFDL louvers are fixed louvers to allow for ventilation but do not have any additional function, meaning they cannot withstand any fire scenario. FLDL louvers are louvers with slats to allow for standard louver functionality but have an additional feature. When temperatures increase in a fire room, the slats slowly become vertical and interlock in place, making a flush door with a louver, turn into a flush door. Preventing the fire from spreading for 90 minutes when installed in the correct door slab.
Standard Layout Options
|Size||AFDL Non-Rated||FLDL Up to 90 min. Rating|
|18″ x 18″||X||—|
|24″ x 12″||X||—|
|24″ x 24″||X||X|
Other options and styles may be available for special order. Please contact Reeb’s Commercial Quoting or Customer Service Department for more information.