Fixed return air grilles can be fitted with bird-proof and insect-proof mesh; movable return air grilles can serve as access panels for maintenance.
Main materials include aluminum plates, electrolytic steel plates and stainless steel plates. Custom sizes are available upon customer request.
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)