FB 6 Inline Filter Box MERV13

Item Number: 40304

• MERV13 filter
• Used for airflows up to 176 cfm
• 6" diameter plastic duct connections
• Beige powder coated
• Neoprene door seal
• Access door removed with thumb screws


Building sciences research has shown that highly efficient filtration of the outside air before it is delivered to the home is one of the best ways to reduce the level of particles suspended in your home's air. The FB6 unit features an 80-90% efficiency filter designed to meet the air filtration efficiency criteria required to gain points toward certification in the Leadership in Energy and Environmental Design (LEED) Green Building rating system.

Technical parameters

Filter class, supply air MERV13
Dimensions and weights
Duct dimension; Circular, inlet 150 mm
Duct dimension; Circular, outlet 150 mm
Weight 10.6 lb
Duct connection type Circular

20 1/2 (521)

19 1/2 (495)

8 (203)

10 (254)

Dimension in inches (mm)

FBRF6 Replacement Filter (FB6) Item Number: 40390 FBRF6 Replacement Filter (FB6) .