Elima-Draft Insulated Magnetic Vent Cover vs Elima-Draft Insulated Magnetic Vent Cover

Buy the A cover if your vents are steel and you want a fixed, well-insulated magnetic cover with a stated R-6 rating. Buy the B cover if your vents are aluminum or you have several register sizes to cover, since its magnets unscrew and reposition across three sizes. A is the more insulated single-size product; B is the more adaptable one. Owners of both report easy, tool-free installation and a real drop in drafts, though one A reviewer doubted the insulation was thick enough for condensation.

• Choose the A cover if your registers are steel and you want a simple magnetic cover with a stated R-6 insulation value.
• Choose the B cover if your vents are aluminum or you want one cover that adjusts to fit 9x9, 11x11 and 13x13 registers.