Rainbow Filter Lid - RTL - Top Load

Rainbow Dynamics RTL top load spa filter lid

May be white, grey, black.
166mm OD, 158mm D - o ring seal area. o-ring recessed.
Offset handle.
Centre is sometimes fitted with automatic brominator which extends into the centre of the cartridge.

*Not to be confused with the Pride filter lid which also has an offset handle, but no air bleed valve