DP01DC-4 Size: 25" H x 16" W x 4" D Features: -MPR 1550. -Compatible with aprilaire, space-gard, trion, air bear and honeywell systems. -Captures 97% of large airborne allergens, such as pollen, mold spores and dust mite debris. -Robust frame construction enhances quality and ensures high durability. Product Type: -Air filter. Dimensions: Filter: -Yes. Size 25" H x 16" W x 4" D - Filter Height - Top to Bottom: -25". Size 25" H x 16" W x 4" D - Filter Width - Side to Side: -16". Size 20" H x 20" W x 4" D - Filter Height - Top to Bottom: -20". Size 25" H x 20" W x 4" D - Filter Width - Side to Side: -20". Size 25" H x 20" W x 4" D - Filter Depth - Front to Back: -4".