Jumbo Mfg 951 Cast Iron Closet Flange 4x2 Inch Caulk-in

Product Description

The JUMBO MFG 951 is a caulk-in cast iron closet flange designed to connect a toilet drain to a 4-inch cast iron drain pipe. The flange fits over a 4-inch pipe and provides a 2-inch depth, creating a secure, leak-resistant joint when properly caulked. Cast iron construction delivers long-term durability in both rough-in and finish plumbing applications. Licensed plumbers and experienced plumbing contractors install this fitting in new construction and retrofit drain systems where cast iron pipe is already in place.

This closet flange is suited for residential and light commercial plumbing systems that use 4-inch cast iron drain lines. The caulk-in design is appropriate for installations where lead and oakum or no-hub caulking compounds are used to secure the fitting to the existing pipe. It is a standard rough-in component installed beneath the toilet at the floor level, providing the ring and bolt slots needed to secure the toilet base.

Key Features

• Cast iron construction for durability and compatibility with existing cast iron drain systems
• Caulk-in design fits over 4-inch cast iron pipe for a secure mechanical joint
• 2-inch depth accommodates standard floor thickness and finish floor transitions
• Closet bolt slots allow standard toilet setting and alignment
• Weighs 2.75 pounds for straightforward single-technician handling during rough-in

Compatibility

Designed as an OEM-style replacement and new-construction fitting for 4-inch cast iron drain systems requiring a caulk-in closet flange connection.

Installation Notes

Installation should be performed by a licensed plumber in accordance with local plumbing codes and the International Plumbing Code. Shut off the water supply and ensure the drain line is clear before beginning work. The caulk-in joint requires proper packing material and caulking compound to achieve a watertight seal around the pipe. Do not overtighten toilet closet bolts after setting, as cast iron flanges can crack under excessive force.

Technical Specifications

• Material: Cast Iron
• Fitting Size: 4 inches x 2 inches
• Type: Closet Flange
• Connection Type: Caulk-In
• Fits Over Pipe Size: 4 inches
• Depth: 2 inches
• Weight: 2.75 pounds

Standard Information

• Brand: JUMBO MFG
• Manufacturer Part Number: 951