20x20x4 Exact AC ) ( Pleated 19-1/2 MERV Furnace 3-3/4 3 Air Glasfloss by x 10 Filters Industries. Pack x : 19-1/2 The inner layer material is

The inner layer material is a polyurethane coating

RECHARGEABLE BATTERY: This compact and powerful battery powered heavy duty wireless PA system has a 12

►【Recording Function】Built-in 32GB SD Card for This 1080P HD Wireless Backup Camera System

265+ Video Compression & 1TB Hard Drive】Compared with H

factory workshops

20x20x4 Exact AC ) ( Pleated 19-1/2 MERV Furnace 3-3/4 3 Air Glasfloss by x 10 Filters Industries. Pack x : 19-1/2 The inner layer material isActual Measurements: 19 1 2 x 19 1 2 x 3 3 4 Inches Nominal : 20x20x4 Quantity 3 Filtration Rating: MERV 10. Comparable to MPR rating 600 to 800, or FPR 5 6 rating. Filters & blocks small particles such as Lint, Dust, Pet Dander, Pollen, Dust Mites, Smog, & Mold. Improved MERV 10 Filtration with similar air flow and resistance as a MERV 8 filter. Durable & Long Lasting: Heavy duty frame won't buckle and pleats will not allow microbial growth.