Search for 21.5 x 21 x 5 filters Your search found 703 result(s)

	Product Details	Stock	Price	Purchase
	Suncourt -- Inductor 10" In-Line Duct Fan (DB210P) The Inductor In-Line Duct Fan solves air delivery problems without major system rework or expense. NOTE: Fits Duct Diameter: 10" Duct Diameter: 10" Unit Weight: 4.5 Lbs. Max Boosted CFM: 650 Free Air CFM: 300  [More...] MFG#: DB210P	In Stock	$44.00
	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
	Bryant/Carrier FILXXFNC-0021 Cartridge Filter (case of 2 Filters) Bryant/Carrier FILXXFNC-0021 Cartridge Filter Size: 19" x 20" x 5" MERV: 8  [More...] MFG#: FILXXFNC-0021	In Stock	$62.95 (case of 2)
	Skuttle Model 216-1 Make Up Air Control - 6" Duct Skuttle Model 216-1 Make Up Air Control - 6" Duct. Self-Adjusting Make-Up Air Control Provides Year-Round, Filtered Fresh Air. Unit is installed on the return air plenum of the furnace. Six-inch insulated flex duct connects the Make-Up Air Control to a screened, fresh air inlet mounted on the outside of the home.  [More...] MFG#: 216-1	In Stock	$75.59
	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)
	13 X 21-1/2 X 1 Carbon Pleated Filter (case of 6 Filters) 13 X 21-1/2 X 1 Carbon Pleated Filter  [More...] MFG#: FO13x21.5x1A	In Stock	$85.95 (case of 6) Suggested: $99.99 You Save: $14.04
	19" X 21" X 1" MERV 11 Pleated Filter - Actual Size (case of 6 Filters) 19" X 21" X 1" MERV 11 Pleated Filter - Actual Size  [More...] MFG#: FA19x21x1A	In Stock	$72.42 (case of 6)
	Fan-Air Model F80210 Air Extractor & Dehumidifier System Fan-Air Model F80210 Air Extractor & Dehumidifier System  [More...] MFG#: F80210	Ships in 2-3 Days	$329.99
	Trion Herrmidifier # G-212 Solenoid Valve Trion Herrmidifier # G-212 Solenoid Valve - Fits Models G200.  [More...] MFG#: G-212	In Stock	$67.95
	Skuttle Model 216-2 Make Up Air Control - 4" Duct Skuttle Model 216-2 Make Up Air Control - 4" Duct. Self-Adjusting Make-Up Air Control Provides Year-Round, Filtered Fresh Air. Unit is installed on the return air plenum of the furnace. Four-inch insulated flex duct connects the Make-Up Air Control to a screened, fresh air inlet mounted on the outside of the home.  [More...] MFG#: 216-2	In Stock	$78.95
	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
	Fan Motor for Skuttle 2002, 2102 Humidifiers (000-1721-048) Fan Motor for Skuttle 2002, 2102 Humidifiers (000-1721-048)  [More...] MFG#: 000-1721-048	In Stock	$64.95 Suggested: $79.99 You Save: $15.04
	Trion Herrmidifier # G-214 Drain Tray Trion Herrmidifier # G-214 Drain Tray - fits Trion Herrmidifier Humidifiers - Fits Models G200.  [More...] MFG#: G-214	17 Pieces In Stock	$11.11
	21" X 21" X 1" MERV 8 Pleated Filter (case of 6 Filters) 21" X 21" X 1" MERV 8 Pleated Filter  [More...] MFG#: FB21x21	In Stock	$65.00 (case of 6)
	21" X 22" X 1" MERV 11 Pleated Filter (case of 6 Filters) 21" X 22" X 1" MERV 11 Pleated Filter  [More...] MFG#: FA21x22	In Stock	$79.95 (case of 6)

Not finding what you're looking for?
We have access to thousands of products and can help you find what you're looking for.
Contact us to find the products you need.