4x12 Inch Air Filter for Home Ceiling, ULTRA GREEN Thickened Floor Vent Filters Replacement for Register Work in Indoor Home Air Purifier, Air Conditioner 4" x 12" 12-Pack (White)

Features

• PACKAGE CONTENTS: 12 Pack of 4"x12" Air Vent Filters, total 12 Pack (White)
• DIMENSION & THICKENDED DESIGH: 4x12 Inch, Easily trimmed with scissors to the size you need. Our newest carbon register filter has been thickened and its density has been increased by approximately two times
• AIR VENT FILTERS FOR AC UNITS AND HEATERS: Insert these air vent filters into the floor air vent registers to purify the air coming from your AC units and heaters. Designed to filter the air you breathe; these air vent filters also prevent dirt and other objects from falling into the air vents
• COMPLETE REPLACEMENT: Our pre-filters greatly reduce the amount of dust & particles getting into your main HEPA filter. This saves you time cleaning and vacuuming the main filter. It is suggested to replace every 90 days
• WARM TIPS: Do not use filter in every register in home. This might cause restrictionin your airflow and damage your AC/Furnace unit