Patent ID: 7811346
Filing Date: 2010-10-12
Classification: B01D,Y10S

Abstract:
1. A filter housing having a raised top portion with a plurality of shaped apertures therein for mounting on an existing air duct or an air duct grill register, said filter housing having a first end portion and a second end portion opposite said first end portion and two side portions connecting said first and second end portions and defining a space between said top portion and said existing duct or grill in which an air control insert can be positioned and a bottom opening about the same size and shape of said existing air duct or air duct grill register, said first end portion having an opening therein adapted to slideably receive said air control insert in said space, said air control insert forming a seal between said existing air duct or air duct grill register and said raised top portion of said filter housing whereby air from said existing duct or air duct grill register can be exhausted through said plurality of shaped apertures and said air duct control insert, wherein the filter housing mounts externally on the air duct or air duct grill register.