Filter Construction

Anatomy of a Fiberlene Filter

Frame Construction:
Filter frames are constructed from heavy duty, pultruded fiberglass reinforced plastic (FRP) with reinforced 26 gauge aluminum corners and a 1/4" drain hole at 12 inch intervals.

Filter Media

The filter media consists of several layers of honeycomb woven polypropylene with crimped anodized aluminum screen. The media is protected by a powder coated galvanized steel lathing.

MERV Rating

The American Society of Heating, Refrigeration & Air Conditioner Engineers or ASHRAE use a MERV rating to evaluate the effectiveness of a filter at trapping small particles. MERV stands for Minimum Efficiency Reporting Value and is based on a scale from 1-16. The higher the value, the more efficient the filter is at trapping airborne particles. Filters with higher MERV ratings have smaller pores through which air can pass, which restricts airflow.

ASHRAE uses Arizona road dust to test filters and the obvious problem that comes to mind is that Arizona road dust is typically found in - well, Arizona. While it may not be perfect, it's one of the consumer driven metrics used.

FIBERLENE IS A MERV 8 FILTER with an initial resistance of .17. We could have designed Fiberlene to be more or less restrictive (higher or lower MERV) but our goal was to strike a good balance between particulate removal & airflow resistance to maximize unit efficiency.

Loading Capactiy

Disposables load between 50-80 grams of particulate before they need to be changed. Fiberlene's 2" thick filter can load up to 160 grams before they require cleaning and why they are cleaned less often than disposables are changed. It's also one of the reasons why maintenance personnel appreciate our filters.

.10 $ 2.59  
.20 $ 5.19 The 1” Model is TESTED at 1200 cfm with an initial
.30 $ 7.79 Resistance of .16 wg and a Face Velocity of 300 feet
.40 $10.39 per Minute and 20.19 square feet of Media resulting in a
.45 $11.69 59.44 feet per minute MEDIA VELOCITY.
.50 $12.99 (1200 + 20.19 = 59.44)
.55 $14.28 The 2” model is tested at 1500 cfm and an Initial Resistance
.60 $15.58 of .17 Wg with a Face Velocity of 375 feet per minute.
.75 $19.49 Media Area is 27.18 square feet resulting in a MEDIA
1.00 $25.98 VELOCITY of 55.19 feet per minute.