This installation gasket accessory is used with modular displays of Schneider Electric's Harmony P6, Harmony FP6, and Harmony GTU range. This installation gasket provides dust and moisture resistance when this product is installed in a solid panel. HMIZD55W is compatible with W10 inch Harmony HMIDM6, Harmony HMIP6, Harmony HMIFP6, and Harmony GTU displays. It is sold as 1 piece/set.