Rejilla de plástico redonda empotrable NDS de color blanco de 3 pulgadas de largo x 3 pulgadas de ancho x 3 pulgadas de diámetro para tuberías corrugadas

This is actually 3-1/8" OD,

"This is actually 3-1/8" OD, which means it's too big for the inside and much smaller than the outside of a 3" sched 40 pvc pipe. It will fit tightly in the end of 3" corrugated drain tile as a guard to keep critters out."

— Jeffrey S. (4/5)