Flue block plate for use with Monessen IDV490 direct vent fireplace inserts. To help facilitate the us of the existing chimney for combustion air supply. Requires the use of UL 1777 listed gas liner (SD3DFA25, SD3DFA35, SD4DFA25, SD4DFA35).

• IDV490

***A 25% RESTOCKING FEE WILL BE APPLIED TO ANY VENTING PRODUCT RETURNS***