Recessed Crawl Space Vent Cover vs Elima-Draft Insulated Magnetic Vent Cover

These are not substitutes. The Recessed Crawl Space Vent Cover seals a foundation vent from inside the crawl space for encapsulation or conditioning work; the Insulated Vent Cover is a magnetic plate for indoor HVAC registers. Buy the recessed cover if you are closing off crawl space vents. Buy the magnetic cover if you want to stop drafts from ceiling or wall registers in winter. On build, the recessed cover is a rigid plastic frame that nails to joists or replaces a block; the magnetic cover is thin ABS that holds by magnet only. Owners of the crawl space cover report it fits standard 8x16 openings and seals well; magnetic cover owners praise the simple snap-on fit and thicker-than-expected insulation, though one questioned whether it handles condensation.

• Choose the Recessed Crawl Space Vent Cover if you are sealing 8x16 foundation vents from inside during an encapsulation or conditioned crawl space project.
• Choose the Insulated Vent Cover if you want to block drafts and heat loss from steel ceiling or wall HVAC registers without tools.