Item as described. Good value for money as I don't like overpaying companies for their replacement products. when will they ever learn The 2 "semicircle" spacers supplied form a full circle when put together. This is an important part of the post-blue filter. It is important to use them for a complete seal. When applying, gradually separate the paper from the first semicircle and press firmly. When you're done with that, place the second semi-circle on one end of the glued one, leaving the paper in place, and encircling the rest of the circle with the unglued spacer. There will probably be a little extra to fit nicely like I did. Carefully mark the cut and cut. Glue the rest of the circle on, using the backing paper about an inch at a time. Take your time! You will find that you can evenly and completely close the circle so that the filter is now sealed. Much luck. Hope that helps.