Blind install drain for bath or shower

A drain installation assembly comprising:

• a coupling configured to be inserted into a drain opening of a wash basin from a top side of the wash basin, the coupling comprising a squeeze portion positioned between opposing ends of the coupling;
• and
• a body comprising a flange extending radially away from the body;
• wherein the squeeze portion is configured to deform when the coupling is coupled to the body to secure the coupling to the wash basin.

A drain assembly for coupling a wash basin to a drain pipe from above the wash basin, the drain assembly comprising:

• a coupling configured to be inserted into a drain opening of the wash basin from a top side of the wash basin, the coupling comprising a squeeze portion positioned between opposing ends of the coupling;
• and
• a body comprising a flange;
• wherein the squeeze portion is formed of a flexible material and is configured to deform when the coupling is coupled to the body.

A method of installing a drain assembly to a wash basin, the method comprising:

• inserting a coupling into a drain opening in the wash basin from a top side of the wash basin, the coupling comprising a squeeze portion positioned between opposing ends of the coupling;
• inserting a body into the coupling;
• and
• causing the squeeze portion to deform to secure the coupling to the wash basin.