Core a 4″ hole in the sidewall and you have a perfect fit for the SUPER SHIM 4 TO 3″ PVC FITTING. Cosmetic flange and shim all in one.
Alternate use:  Super Shim doubles as a floor flange for 4″ cores (3″ PVC). For smaller suction pit cores, use Super Shim for a nice floor flange trim ring.
Made by mitigators, for mitigators!
3D printed in the USA with specifications to the millimeter.
Made from PETG filament it is UV resistant, paintable, and outdoor rated. Simply wipe with Acetone, prime, and paint.
O.D. is 4″. Inner diameter is 3.5″ to perfectly fit 3″ schedule 40 PVC
Colorado-made.  Support two small businesses with this purchase!
**Due to customer feedback, design changes may be implemented at anytime. Product received may not match photos on website because we’re always improving!!**
SUPER SHIM 4″ HOLE TO 3″ PVC SML SIZE
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