Below you can see a direct comparison of the products you have selected. Differences between the products are highlighted in blue.
Plastic exhaust sockets as spare parts for ER GH recessed-mounted housing
Plastic exhaust socket as spare parts for ER-UP/G recessed-mounted housing, ER-AS suction nozzle, ER-ZR second room suction and various surface-mounted fans of the ER-AP group
Shutter support with plastic backflow preventer as spare part for ER GH and ER-UP/G recessed-mounted housing and various surface-mounted fans of the ER-AP group
Exhaust socket with pre-assembled metal backflow preventer as spare part for various recessed-mounted housing of the ER-UPD and ER-UPB groups
* Blue markings show the differences between the products.