Search for 19 3/4 x 21 1/4 filters Your search found 302 result(s)

	Product Details	Stock	Price	Purchase
	Dynamic Equivalent Air Cleaner Refills - 16" x 21" x 1" - 3 Pack (case of 3 refill pads) Dynamic Air Cleaner Refills - 16" x 21" x 1" - 3 Pack  [More...] MFG#: DPE16X21X1	In Stock	$49.95 (case of 3)
	Aprilaire #4021 Red Orifice The Red Orifice regulates the water flow into the humidifier.  [More...] MFG#: 4021	In Stock	$2.32
	20" X 20" X 5" MERV 11 Replacement For Ultravation Filter (case of 3 Filters) 20" X 20" X 5" MERV 11 Replacement For Ultravation Filter  [More...] MFG#: 259112-102	In Stock	$59.95 (case of 3) Suggested: $75.99 You Save: $16.04
	Fantech HP2133 Low Power Consumption Radon Mitigation Fan for 4" Duct Fantech Radon Mitigation Fan - 4" Duct (HP 2133) - 134 CFM at 0"WC Static Pressure / 68 CFM at .5" WC Static Pressure For applications where lower pressure and flow are needed. Record low power consumption of 14-20 watts! Often used where there is good sub slab communication and lower Radon levels.  [More...] MFG#: HP2133	In Stock	$119.95
	Replacement Inline Strainer for Skuttle Humidifiers (000-1319-051) Replacement Inline Strainer for Skuttle Humidifiers (000-1319-051) Fits Models 2000, 2100, 2001, 2101, 2002, 2102, 55, 592  [More...] MFG#: 000-1319-051	9 Pieces In Stock	$4.64
	Trion Air Bear 259112-102 MERV 11 Replacement Filter - 20x25x5 (case of 2 Filters) Factory Original OEM Trion Air Bear Filter- 20x25x5 (19 3/4" X 24-1/4" X 4 7/8") RATED MERV 11  [More...] MFG#: 259112-102	In Stock	$49.95 (case of 2) Suggested: $109.95 You Save: $60.00
	Fantech Low Profile Radon Mitigation Fan for 4" Duct - HP190SL Fantech Low Profile Radon Mitigation Fan for 4" Duct - HP190SL  [More...] MFG#: HP190SL	In Stock	$204.00 Suggested: $255.00 You Save: $51.00
	18 x 24 x 1 Filtrete Ultimate Allergen Reduction Filter - UA21DC-6 (case of 6 Filters) 18 x 24 x 1 FiltreteŽ Advanced Allergen Reduction Filter from 3M - # UA21DC-6. 3M Performance Rating = 1900 . Highest performance for Filtrete 1" filters.  [More...] MFG#: UA21DC-6	In Stock	$129.28 (case of 6)
	Phoenix 200 MERV 8 (30%) Pleated Filter - 16x16x2 (4021799) Phoenix 200 MERV 8 (30%) Replacement Filter for original Phoenix 200 Dehumidifier (4021799) and Santa Fe HI-E Dry 195 Dehumidifier (4023631) . Nominal dimensions - 16" x 16" x 2"  [More...] MFG#: 4021799	In Stock	$14.50
	Skuttle Model 2100 High-Capacity Bypass Flow-Thru Humidifier - up to 1,627 to 3,333 square feet of humidification - Output capacity of 14.0 gallons per day - Designed to fit today's narrower plenums, as narrow as 10" - One year warranty SEE ALL PARTS FOR THIS MODEL  [More...] MFG#: 2100	1 Piece In Stock	$169.95
	Suncourt -- Inductor 12" In-Line Duct Fan (DB212P) The Inductor In-Line Duct Fan solves air delivery problems without major system rework or expense. NOTE: Fits Duct Diameter: 12" Max Boosted CFM: 800 Free Air CFM: 650  [More...] MFG#: DB212P	In Stock	$49.95
	Aprilaire / Space-Gard #213 MERV 13 Replacement Filter - 8 Pack (case of 8 Filters) Aprilaire / Space-Gard #213 Original, OEM High Efficiency Filtering Media - MERV 13 (8-Pack)  [More...] MFG#: 213	In Stock	$321.95 (case of 8)
	Replacement for Bryant/Carrier 19x20x5 Filter - MERV 8 (case of 2 Filters) Replacement for Bryant/Carrier - FILXXFNC-0021 - 19x20x5 Filter Size: 19" x 20" x 5" MERV: 8  [More...] MFG#: DPFPCC0021	In Stock	$54.79 (case of 2)
	18 x 24 x 1 Filtrete Ultra Allergen Reduction Filter - #2021 (case of 6 Filters) 18 x 24 x 1 FiltreteŽ Ultra Allergen Reduction Filter from 3M - #2021See all filters in this size  [More...] MFG#: 2021	In Stock	$123.97 (case of 6)
	Replacement Parts Kit for Skuttle Model 190 Humidifier (K00-0190-000) Replacement Parts Kit for Skuttle Model 190 Humidifier (K00-0190-000)  [More...] MFG#: K00-0190-000	7 Pieces In Stock	$24.21

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