FEET 2 Tile Message - Plastic Overlay Depth Marker - 6 x 6 Inch with 4 Inch Lettering portability_Semi-Permanent The outside tube is formed

The outside tube is formed slightly out of round and the inside tube is equally out of round which creates the friction for the lock

They are rated at 300 pounds for safe use in commercial environments

This o-ring is identical to these part numbers: Astral 722R0840030

This is a Jandy Zodiac DEV48 Filter Grid Element Full Size Grid

FEET 2 Tile Message - Plastic Overlay Depth Marker - 6 x 6 Inch with 4 Inch Lettering portability_Semi-Permanent The outside tube is formedThis plastic depth marker tile states FEET as a 2 tile set It has an overall size of 6 x 6 inches which will fit over standard ceramic pool depth marker tiles. Our tempered Plastic Overlays are made for the waterline depth in your pool. They have beveled edges, a smooth surface, and a thin profile. They can be installed over most surfaces including tile, fiberglass, paint, vinyl liner, etc. Overlays are used to go over existing tile depth marking that