Search query: 4in flange

Product: POWERTEC 70126 Inlet Flange, 4 Inch OD Dust Collection Ducting Connector INCLUDES: 4” Flanged Inlet Fitting
VERSATILE: Primarily used for attaching 4-inch ID dust hoses and similar sized machines ports to dust collection ports and woodworking applications, but can also serve as a dryer duct connector and works exceptionally well for heating and cooling ventilation projects
FEATURES: An all-black, high precision solid round build with pre-bored mounting holes for a quick and easy installation
PREMIUM BUILD: Made with high quality and rigid ABS plastic material – giving you optimal abrasion resistance, application durability and tensile strength for tough jobs and tougher woodworking conditions
DIMENSIONS: Flange diameter measures 5-9/16-Inch | 4-Inch nominal end measures 3-59/64-Inch OD. And 3-23/32-Inch I.D. POWERTEC

Product: Woodstock D4262 4-Inch Connector Flange diameter is 5-5/8-inch
Simply cut a 4-inch diameter hole and mount the connector
Pre-bored mounting holes Woodstock

Product: Oatey 43538 4-inch Black ABS Cast Iron Closet Flange Replacement Replaces broken cast iron closet flanges
Rubber compression gasket enables flange to be used on many types of cast-iron piping
3 stainless-steel bolts compress the rubber gasket to secure the flange to the existing piping
Compression joint provides up to 3 in. of adjustment to the riser
Durable plastic construction for long-lasting use Oatey Black

Product: Big Horn 11428 4-Inch Dust Port with 4 Mounting Holes Use with 4-inch hose
Use on machines such as joiners and band saws
Has 4 pre drilled mounting holes for easy attachment
Made of black ABS plastic
For best connection use clamp (not included) Big Horn