Titus 350RLF1 20×20 Return Air Filter Grille Plenum Box 14” Duct Collar

Includes the exact grille, plenum box and duct collar pictured. • White steel grille with galvanized steel plenum. • 14” round duct connection. Used condition with scratches, scuffs, dust, minor dents/bends, installation marks and light surface oxidation around portions of the duct collar.

Aerus Air Scrubber Duct Mounted System (9960052) Ozone Free- New New

An ozone-free air scrubber, like the Air Scrubber by Aerus, is a device designed to purify indoor air and surfaces without producing harmful ozone. It utilizes technologies like ActivePure Technology, which combines UV light and a catalytic process to reduce contaminants like bacteria, viruses, and allergens.

Return air plenum, for filter grill 20″ x 20″x5″ with 10″ collar & 3/4″ flange

This return plenum box is designed to be used with a 20″x25″ filter grille. The size of the box is 20″x25″x5″ deep with a 3/4″ flange, and the 10 inch collar is 4″ long. Overall dimensions to the outside of the 3/4″ flange are 21 5/8″x 26 5/8″. It’s manufactured from 26 gauge galvanized metal. The 10 inch collar will be cut centered in the plenum box for you to install it. If you need a different size or a different size collar, please check our eBay store. You can call or message us if you need a custom size that you don’t see listed. We will make and ship it out to you quickly.

(2×) Return air plenum, 20″ x 20″x5″ with (2×) 10″ collars & 3/4″ flange

These two return plenum box are designed to be used with a 20″x20″ filter grille. The size of the box is 20″x20″x5″ deep with a 3/4″ flange, and the 10 inch collar is 4″ long. Overall dimensions to the outside of the 3/4″ flange are 21 3/4 “x 21 3/4”. They are manufactured from 26 gauge galvanized metal. The 10 inch collar will be cut centered in the plenum box for you to install it. If you need a different size or a different size collar, please check our eBay store. You can call or message us if you need a custom size that you don’t see listed. We will make and ship it out to you quickly.

Return air plenum for filter grille 20″x 30″x 5″ with 12″collar & 3/4″ flange

This return plenum box is designed to be used with a 20″x30″ filter grille. The size of the box is 20″x30″x5″ deep with a 3/4″ flange, and the 12″ collar is 4″ long. Overall dimensions to the outside of the 3/4″ flange are 21 5/8″x 31 5/8″. It’s manufactured from 26 gauge galvanized metal. The 12″ collar will be cut centered in the plenum box for you to install it. If you need a different size or a different size collar, please check our eBay store. You can call or message us if you need a custom size that you don’t see listed. We will make and ship it out to you quickly.

Return air plenum for filter grille 20″x 30″x 5″ with 10″collar & 3/4″ flange

This return plenum box is designed to be used with a 20″x30″ filter grille. The size of the box is 20″x30″x5″ deep with a 3/4″ flange, and the 10″ collar is 4″ long. Overall dimensions to the outside of the 3/4″ flange are 21 5/8″x 31 5/8″. It’s manufactured from 26 gauge galvanized metal. The 10″ collar will be cut centered in the plenum box for you to install it. If you need a different size or a different size collar, please check our eBay store. You can call or message us if you need a custom size that you don’t see listed. We will make and ship it out to you quickly.

Return air plenum for filter grille 20″x 30″x 5″ with 20″collar & 3/4″ flange

This return plenum box is designed to be used with a 20″x30″ filter grille. The size of the box is 20″x30″x5″ deep with a 3/4″ flange, and the 20″ collar is 4″ long. Overall dimensions to the outside of the 3/4″ flange are 21 5/8″x 31 5/8″. It’s manufactured from 26 gauge galvanized metal. The 20″ collar will be cut centered in the plenum box for you to install it. If you need a different size or a different size collar, please check our eBay store. You can call or message us if you need a custom size that you don’t see listed. We will make and ship it out to you quickly.

Return air plenum for filter grille 20″x 30″x 5″ with 16″collar & 3/4″ flange

This return plenum box is designed to be used with a 20″x30″ filter grille. The size of the box is 20″x30″x5″ deep with a 3/4″ flange, and the 16″ collar is 4″ long. Overall dimensions to the outside of the 3/4″ flange are 21 5/8″x 31 5/8″. It’s manufactured from 26 gauge galvanized metal. The 16″ collar will be cut centered in the plenum box for you to install it. If you need a different size or a different size collar, please check our eBay store. You can call or message us if you need a custom size that you don’t see listed. We will make and ship it out to you quickly.