Nipple close by close 1/4" x 1/4 When ever you want to connect two filter housings together you use a nipple. If you want to save space you use a close by close nipple. Close by close is another way of saying as short a nipple as possible.

Nipple close by close 1/4" x 1/4 When ever you want to connect two filter housings together you use a nipple. If you want to save space you use a close by close nipple. Close by close is another way of saying as short a nipple as possible.