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Stainless Steel Accessible Weatherproof Return Air Grille
Product / Cleanroom equipment

Stainless Steel Accessible Weatherproof Return Air Grille

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Product Introduction
Return air grilles are installed between indoor and outdoor sections, designed to prevent rainwater from entering air ducts or indoor spaces through the air openings. Fixed return air grilles can be fitted with bird-proof and insect-proof meshes; movable opening-type return air grilles can serve as maintenance access hatches. The grille panels are mainly made of aluminum sheets, electrolytic steel sheets and stainless steel, with custom sizes available according to customers' requirements.

Technical Parameters：


Dimensions Outlet air velocity(m/s) 1M/S 200fpm 1.5M/S 300fpm 2M/S 400fpm 2.5M/S 500fpm 3M/S 600fpm
200x150 Flow q(1/s) 15 23 31 38 46
q(cfm) 32 48 65 80 97
300x235 Flow q(1/s) 44 65 88 108 131
q(cfm) 92 138 185 230 277
460x320 Flow q(1/s) 88 132 176 220 265
q(cfm) 187 280 374 467 562
590x405 Flow q(1/s) 147 219 294 367 442
q(cfm) 312 465 624 777 936
720x490 Flow q(1/s) 221 329 442 550 661
q(cfm) 468 697 936 1165 1401
850x575 Flow q(1/s) 310 463 619 772 931
q(cfm) 657 980 1313 1636 1972
980x660 Flow q(/s) 414 617 828 1031 1242
q(cfm) 877 1307 1754 2184 2631
1110x745 Flow q(1/s) 532 793 1064 1325 1594
q(cfm) 1127 1680 2254 2808 3378
1260x830 Flow q(/s) 665 993 1332 1658 1997
q(cfm) 1410 2104 2822 3514 4232
1370x915 Flow q(1/s) 814 1214 1628 2029 2443
q(cfm) 1725 2572 3449 4300 5177
1500xI000 Flow q(/s) 978 1458 1956 2436 2933
q(cfm) 2072 3090 4144 5162 6215
Custom orders with specific requirements are accepted. q=Flow rate (unit: L/s or cfm)
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