Make a damper sealing block-off plate

A block-off plate is particularly helpful with inserts installed in fireplace on exterior walls with exterior chimneys. Without one, the flue liner (which should be insulated) and the stove will try to heat the mass of masonry that is exposed to the outdoors. This can result in a

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Help with blocking plate installation (eastern MA)

Insert just a little too deep for the upper part of the fireplace?

Block off plate . Do I really need it?

P2M Nissan KA24DE EGR block off plate kit allows removal of stock EGR from the stock intake plenum, most often the case with turbocharged KA24DE motor

P2M - NISSAN KA24DE EGR BLOCK OFF PLATE (P2-EGRKA24-GD)

Fireplace Insert Panels - best way to seal the panels against the brick

seeking info on Avalon AVB-800 (or AV5-800?) insert, from Oct 1985

Another Block off Plate install (with pics!)

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HVAC Dampers: A Crucial Component in HVAC Zoning System

Make a damper sealing block-off plate

What to do about flue? Remove it? Ovalize liner to fit? Please advise.

wood stove/insert for 300sq ft

Building a Block Off Plate

Make a damper sealing block-off plate