Search for 21 1/2 x 21 1/2 x 5 Your search found 778 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
	Trion Air Bear Cub 259112-101 Replacement Filter - 16x25x3 (case of 3 Filters) OEM Trion Air Bear Cub 259112-101 Replacement Filter - 16x25x3 (3-Pack)  [More...] MFG#: 259112-101	In Stock	$53.54 (case of 3) Suggested: $89.99 You Save: $36.45
	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 21" X 1" MERV 11 Pleated Filter (case of 6 Filters) 21" X 21" X 1" MERV 11 Pleated Filter  [More...] MFG#: FA21x21	In Stock	$79.95 (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)
	21" X 22" X 1" MERV 8 Pleated Filter (case of 6 Filters) 21" X 22" X 1" MERV 8 Pleated Filter  [More...] MFG#: FB21x21	In Stock	$65.00 (case of 6)
	Aprilaire #213 MERV 13 Replacement Filter, 2-Pack (case of 2 Filters) Aprilaire / Space-Gard #213 Original, OEM High Efficiency Filtering Media - MERV 13 (2-Pack)  [More...] MFG#: 213	In Stock	$86.95 (case of 2)
	Aprilaire 213 Media Filter Aprilaire / Space-Gard #213 Original, OEM High Efficiency Filtering Media - MERV 13 (Single Filter)  [More...] MFG#: 213	In Stock	$44.99
	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)
	Fantech HP2190 Small Radon Mitigation Fan for 4" Duct - HP 2190 Fantech Radon Mitigation Fan - 4" Duct (HP 2190) - 163 CFM at 0"WC Static Pressure / 81 CFM at 1" WC Static Pressure Performance like the HP190 but in a smaller housing. Performance suitable for the majority of installations.  [More...] MFG#: HP2190	In Stock	$136.95
	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
	Trane/American Standard PERFECT FIT Air Filter (BAYFTAH21M) (case of 2 Filters) - Genuine OEM Replacement Air Filter - 21" X 21.5" X 5" nominal (21.1" X 20.1" X 5" actual size)  [More...] MFG#: BAYFTAH21M / FLR06072	In Stock	$109.95 (case of 2)
	Aprilaire #210 MERV 11 Replacement Filter, 2-Pack (case of 2 Filters) Aprilaire #210 Original, OEM High Efficiency Filtering Media - MERV 11 (2-Pack)  [More...] MFG#: 210	In Stock	$71.95 (case of 2)
	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

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