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grilles, air valves, diffusers: plenum boxes

SR Plenum box

SR type expansion boxes are connection elements for ventilation grilles and diffusers. They are manufactured with an upper or side nipple connecting bracket, optionally equipped with a throttle. On request, SR can be made in an insulated version.

material:
standard SR are made of galvanized sheet. On request, they can be made of stainless steel and varnished in any color from the RAL palette.

Standard sizes in the table . On request, the manufacturer also provides other, non-standard dimensions.

 

Size A B H d1 L2 E pow. [m2] thickness [mm] weight [kg]
0 190 190 250 125 40 88 0,26 0,5 1,04
1 245 245 320 160 40 112 0,42 0,5 1,67
1 245 245 400 200 40 140 0,50 0,5 2,01
2 301 301 320 160 40 112 0,53 0,5 2,10
2 301 301 400 200 40 140 0,63 0,5 2,51
3 357 357 320 160 40 112 0,64 0,6 3,07
3 357 357 400 200 40 140 0,76 0,6 3,65
4 412 412 320 160 40 112 0,76 0,6 3,64
4 412 412 400 200 40 140 0,90 0,6 4,30
4 412 412 500 250 60 175 1,08 0,6 5,19
5 469 469 400 200 40 140 1,04 0,6 5,00
5 469 469 500 250 60 175 1,25 0,6 6,01
5 469 469 630 315 60 221 1,51 0,6 7,24
6 498 498 500 250 60 175 1,34 0,6 6,44
6 498 498 630 315 60 221 1,61 0,6 7,74
6 498 498 710 355 60 249 1,78 0,6 8,54
7 598 598 500 250 60 175 1,66 0,7 9,30
7 598 598 630 315 60 221 1,98 0,7 11,11
7 598 598 710 355 60 249 2,18 0,7 12,22
7 598 598 800 400 80 280 2,43 0,7 13,62
8 623 623 500 250 60 175 1,74 0,8 11,16
8 623 623 630 315 60 221 2,08 0,8 13,31
8 623 623 710 355 60 249 2,29 0,8 14,63
8 623 623 800 400 80 280 2,54 0,8 16,28

UK = 20 (wringing)

Formulas for calculations:

– circuit O = 2 (A + B)

– area F = 2 (A + B) H + AxB + πd1L2

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