Specifications include, but are not limited to: 4.4.1 All air filters furnished must be new. 4.4.2 All air filters furnished must be of standard professional quality and workmanship. 4.4.3 All air filters furnished must be Energy Star rated, where available. 4.4.4 If disposable, the filter must be cardboard framed or suitable component. 4.4.5 All air filters furnished must be unitized (all one piece). 4.4.6 It is acceptable to use form rolled with a wire frame as part of the design. 4.4.7 All four media sides touching the outer perimeter of the die cut frame will be attached to the framework with a suitable bonding agent to prevent air bypass of the filter media. 4.4.8 The cross hatch bars of the die-cut frame will be bonded to the apex of the individual pleats on both the air entering and air exiting sides. Due to side access strength issues, the use of individual glued strips acting as a media retainer will not be allowed. 4.4.9 Be single ply media. The use of multiple layers of a thinner media to achieve loft is not acceptable. 4.4.10 Pleated filter media will be supported with an expanded wire that is attached to the air exiting side of the medium. 4.4.11 Any filter exceeding 36” in length will have stiffener(s) installed at proportional distance(s) from the ends to ensure strength and allow for front loading long filters without collapse. Filters exceeding 50” will have two stiffeners and those exceeding 70” will have three stiffeners. If two or more stiffeners are required, they will be located at equal distances from the filter’s ends. 4.4.12 Stiffeners will be located on the downstream side of all air filters to allow for maximum dust collection area on the air entering side. 4.4.13 Gel tack incorporated into the filter element will: • Be non-migrating (feels sticky but will not transfer to the hand when touched) • Be non-drying (will not evaporate or re-condense onto the coils like oil coatings do) • Contain an anti-microbial additive to retard microbial growth in the filter • Be evenly dispersed through the entire filter element to enhance airborne allergen removal. 4.4.14 Some filters may require a capacity for moisture saturation without coming apart. A saturation test which involves soaking the filter in water will be required to verify air filter wet strength and PBA may request a copy of the saturation results if the supplier manufactures their own filters.
