The PTVK410 must be used in conjunction with the PTVK420 6" ventilation kit flange. The addition of a ventilation kit allows fresh air into you home. It works with all LG LCN ceiling cassettes. The kit includes the ventilation kit, 8 bolts and 1 insulation piece. Additionally, the PTVK420 6 inch ventilation flange can be purchased separately or as part of a kit.
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Replacement of malfunctioning Product and Parts for one (1) year from the date of original installation.