Chimney Connection/Modified Wall Thimble

I bought a stove from another individual, complete with double-wall chimney pipe and a thimble kit to go through the wall. (DuraPlus by DuraVent, 10" OD/6" ID.) After the handyman and I finished installing the flue, we figured out that the wall thimble has been modified. This is what it looks

DuraVent DuraPlus 6 in. D Aluminum/Galvanized Steel Wall Thimble - Ace Hardware

* (58DVA-WT) *May be required in Canada, Provides a complete wall-pass-through and firestop. Use with Square Horizontal Cap only. May be required

5 x 8 DirectVent Pro Wall Thimble

Chimney Connection/Modified Wall Thimble

Empire White Mountain Hearth Wall Thimble Cover - SD46DVADC

Chimney has been filling the supply and accessory needs of over 8 000 chimney sweeps hearth retailers masons and contractors for over 25 years. Chimney has the privilege of serving over 80% of the chimney professionals in America.Founded by Robert Daniels Sooty Bob in 1978 Chimney has grown from a one-man operation to a national network of six warehouses and a manufacturing plant.

DuraVent 4GVWT B-Vent, 4 Wall Thimble

How I Install a chimney pipe through the wall with a 1 foot over hang for my wood burning stove DIY

* (46DVA-WT) *May be required in Canada, Provides a complete wall-pass-through and firestop. Use with Square Horizontal Cap only. May be required

4” x 6 5/8” DirectVent Pro Wall Thimble

Insulated Chimney Thimble for Thimble and Wall Pass Thru Installations - Rockford Chimney

EWT/RWT - Wall Thimble

8 chimney thimble 6 coal stove - what do I do, Coal Bins & Chimneys

Safe Through The Wall Stove Pipe Installation, 44% OFF

What am I dealing with here to connect to this chimney support box? : r/woodstoving

Insulated Chimney Thimble for Thimble and Wall Pass Thru Installations - Rockford Chimney

DuraVent 3GVWT Type B GAS Vent 3-Inch Wall Thimble

Chimney and Fireplace Anatomy » Full Service Chimney™