Dimensions B+0 A+0 A B Description is a rectangular ventilation grille with vertical adjustable bars for direct installation in circular ducts. The grille can be used for both supply and exhaust air. The grille can be supplied with horizontal directional bars, straight or slanting sliding damper or blade damper. The grille is designed so that the grille flanges always fit tight to the duct regardless of the duct diameter. is made of hot-galvanised steel plate and is put together without welding. This means that the grille can be used without further surface treatment. The exterior of the grille thus matches the duct surface. A x B = Cutting dimension Screws included. BxA Can be used for both supply and exhaust air Installed directly in circular duct Can be fitted with many types of accessory Maintenance The grille should be removed to gain access to the duct. Order code Product a bbb ccc Type Accessories A - measure B - measure A x B = Cutting dimension Materials and finish Grille: Hot-galvanised steel Sliding damper: Electro-galvanised steel Blade damper: Electro-galvanised steel The diffuser is available in other colours. Please contact Lindab s sales department for further information. We reserve the right to make changes without prior notice
Dimensions Use Measure A x B Min duct measure mm Free area F(m ) - Suitable for supply and exhaust air. The grille is equipped with a single adjustment damper and has a lower sound level than -. - As - with horizontal directional bars specifically for supply air. - The grille is suitable for exhaust only. C - Measure mm Weight kg X 0.0. X 0.0. X 0.0.0 X 00 0.0.0 X 0.0.0 X 0 0.0.0 X 0.0.0 X 00 0.0,00 X 0.0.0 X 0 0.0,00 X 0.0.0 X 00 0.0.0 X 0.0.0 X 0 0.0.0 X 0.0.0 X 00 0..0 X 0.0.0 X 0 0.0. X 0.0.0 X 00 0.. X 00 0.0.0 X 00 0.0.0 X 0 0.,00 X 0..0 X 00 0..0 - Slanting sliding damper Suitable for supply and exhaust air. The grille is equipped with a slanting sliding damper, which means the air is distributed evenly over the whole grille. - As - with horizontal directional bars specifically for supply air. Accessories -0, without accessories. -, With directional bars. -, With blade damper. -, With directional bars and blade damper. -, With straight sliding damper. -, With slanting sliding damper. C 0 -, With directional bars and slanting sliding damper. C We reserve the right to make changes without prior notice
Technical data Effective speed v 0 The diagram for throw (see next page) specifies effective speed v 0 [m/s] as a function of the volume flow q [m /h, l/s] for each grille size with 0 o bar setting. Air jet dispersal >00 b v = 0, l 0, Throw l 0. The diagram for throw (see next page) specifies the throw l 0. [m] at an average terminal velocity of 0. m/s, 0 o bar setting without ceiling effect. (Distance from grille to ceiling greater than 00 mm.) l b l 0 b v l b = 0, l 0, Table : Correction for dispersal: x b h Bar setting Correction factor V 0, Correction factor l 0, 0, Ceiling effect If the distance from grille to ceiling is less than 00 mm, the throw l 0. must be multiplied by.. Total pressure p t The diagram "Pressure sound level" page states the grille s total pressure p t [Pa]. Sound effect level L WA The diagram "Pressure sound level" states the grille s sound effect level L WA [db(a)] at a free area of 0.0 m. Table : Correction for free area: Duct speed v k Pressure and sound effect level are stated for different duct speeds v k [m/s]. For duct speeds v k < m/s, the sound values L WA must be corrected by - db. The diagrams on the following pages are in table form. See dimensioning tables. The values apply to grilles with 0 o dispersal. Table : Correction for dispersal:, 0, Correction free area F [m ] 0,0 0,0 0,0 0,0 0,0 0,0 0,0 0, 0, 0, 0, correction [db] - - - - 0 + + + + + + Bar setting o 0 o Pressure Sound power level 0 x, + x, + X = 0 o : b h = 0. l 0. l b = 0. l 0. X = o : b h = 0. l 0. l b = 0. l 0. X = 0 o : b h = 0. l 0. l b = 0. x l 0. l 0. : catalogue values Sample calculation Room width: W = m, Room height: H =. m Volume flow per grille: 00 m /h Duct speed v k = m/s Speed in the occupied zone: < 0. m/s From next page: l b l = 0, x 0, C = H -, = 0, m B + C = 0, m/s The diagram "Effective speed v o - Throw l 0. " (next pages): Grille x : l 0. =.0 m v o =. m/s Pressure loss and sound effect level: The diagram "Pressure Sound level": open damper v 0 =. m/s p t = Pa L WA = db(a) v k =.0 m/s Free area: 0.0 m Correction table : - L WA = - = db(a) The diagram "Pressure Sound level": 0% open damper: p t = Pa L WA = 0 - B + C =, m 0, l 0, (B + C) x, x, m 0, 0,0 = db(a) We reserve the right to make changes without prior notice
Technical data - Supply air B A C v o C v o v o H 00 XY 00 XY XY = occupied zone Final velocities The speed in occupied zone v X : Terminal velocity v X at distance X: Other terminal velocities v X : The distance to the point where the speed has decreased to v X is: = X = K x l 0. Table : l 0, B + C x 0, m/s = l 0, x 0, 0, 0, 0, 0, 0, 0, K,,0 0, 0, 0, 0, X = A l 0, x 0, m/s + C Sample calculation Room: Width: W = m, Height:. m C =.. = 0. m Grille: x Volume flow: 00 m /h Throw according to the diagram on the next page: l 0. =.0 m The speed in the occupied zone: l 0, = x 0, =,0 x 0, = 0, m/s B + C, The speed m from the grille is: l v X = 0, x 0, = x 0, = 0, m/s B + C The distance to the point where the speed has decreased to 0, m/s is: 0, x l 0, = 0, x =,0 m We reserve the right to make changes without prior notice
Technical data - Supply and exhaust air Effective speed v 0 - Throw l 0. v 0 [m/s] F [m ] 0.. 0.0 0.0 0.0 0.0 0.0 0.0 0 0. 0. 0. 0. 0. 0 0 0 0 0 0 00 00 00 00 00 00 0 l/s m /h 0 0 0 00 00 00 00 00 00 0 000 000 000 000 l 0, (m) Sample calculation Grille x Volume flow: 00 m /h Supply air speed: v 0 =. m/s Throw: l 0. =.0 m With 0 o dispersal: (See table, page ) v 0 =. x. =. m/s l 0. = 0. x.0 =.0 m. We reserve the right to make changes without prior notice
Technical data- - Supply and exhaust air Pressure - Sound level with accessories, and p t [Pa] 0 0 0 0 0 0 Vo Correction Correction for with accessories and. Table : Duct velocity V k, 0,, Total pressure p t x 0, Pa Sound power level L WA - db(a) LWA 0 0 0 0 m/s m/s 0% Sample calculation - x Area: 0.0 m Volume flow: 0 m /h Supply air speed: Duct speed: open damper: Table : p t = Pa L WA = db 0% open damper: v 0 =.0 m/s v k = m/s 0.0 m : - db L WA = - = 0 db p t = 0 Pa L WA = - = db Dimensioning tables for The following pages contain dimensioning tables for with accessories, and. Correction for with accessories and - see table. Explanation for dimensioning tables. Volume of air (m /h). Throw. Duct speed. open damper. 0% open damper. Volume of air (l/s). Pressure loss. Sound level. Pressure loss. Sound level Table : Correction for free area.: Correction free area F [m ] 0,0 0,0 0,0 0,0 0,0 0,0 0,0 0, 0, 0, 0, correction [db] - - - - 0 + + + + + + q: 00 m /h - l/s l 0 :,0 m v k -m/s 0% p t p t L w L w 0 We reserve the right to make changes without prior notice
Technical data-supply and exhaust air Dimensioning table with accessories, and B dimension: mm 0,0 m 0,0 m 0,0 m 0,0 m 0,0 m 0,0 m 0,0 m q: m /h - l/s l 0, :,0 m q: 0 m /h - l/s l 0, :,0 m q: m /h - l/s l 0, :, m q: 00 m /h - l/s l 0, :,0 m q: 0 m /h - l/s p t 0 p t p t 0 p t 0 p t L W L W L W L W L W 0 0% p t 0 0% p t 0 0% p t 0 0% p t 0 0% p t L W L W L W 0 L W L W 0 q: 0 m /h - l/s l 0, :, m q: m /h - l/s l 0, :, m q: 00 m /h - l/s l 0, :, m q: 0 m /h - l/s l 0, :,0 m q: 00 m /h - l/s p t 0 p t 0 p t 0 p t p t L W 0 L W L W L W L W 0% p t 0 0% p t 0% p t 0 0% p t 0 0 L W L W 0 L W L W L W 0 q: m /h - l/s l 0, :, m q: 00 m /h - l/s l 0, :, m q: 0 m /h - l/s l 0, :, m q: 00 m /h - l/s q: 0 m /h - l/s l 0, :,0 m p t p t p t p t p t L W L W L W L W 0 L W 0% p t 0 0% p t 0% p t 0% p t L W L W 0 L W L W L W q: 00 m /h - l/s l 0, :,0 m q: 0 m /h - l/s l 0, :, m q: 00 m /h - l/s l 0, :, m q: 0 m /h - l/s l 0, :, m q: 00 m /h - l/s l 0, :, m p t p t p t p t p t 0 L W L W L W 0 L W L W 0% p t 0 0 0 0% p t 0% p t 0% p t 0 L W 0 L W L W L W 0 0 L W q: 0 m /h - l/s l 0, :, m q: 00 m /h - l/s l 0, :,0 m q: 00 m /h - l/s q: 00 m /h - l/s l 0, :, m l 0, :,0 m p t p t 0 p t p t p t L W L W L W 0 L W L W 0 0% p t 0% p t L W 0 0 L W L W 0 L W L W 0 q: 00 m /h - l/s l 0, :,0 m q: 00 m /h - l/s l 0, :, m q: 00 m /h - l/s l 0, :,0 m l 0, :, m q: 00 m /h - l/s l 0, :,0 m p t p t p t p t p t L W L W L W 0 L W 0 L W 0% p t 0% p t L W L W 0 L W L W L W q: 00 m /h - l/s l 0, :,0 m q: 00 m /h - l/s l 0, :, m q: 00 m /h - l/s l 0, :, m q: 00 m /h - l/s l 0, :,0 m p t p t p t p t p t 0 L W L W 0 0 0 L W L W L W 0% p t 0 0% p t 0% p t 0% p t 0 L W 0 L W L W 0 L W L W We reserve the right to make changes without prior notice
Technical data- Supply and exhaust air Dimensioning table with accessories, and B dimension: mm 0,0 m 0,0 m 0,0 m 0,0 m 0,0 m 0,0 m 0, m q: m /h - l/s l 0, :, m q: 00 m /h - l/s l 0, :, m q: 0 m /h - l/s l 0, :, m q: 00 m /h - l/s q: 0 m /h - l/s l 0, :,0 m p t p t p t p t p t L W L W L W L W 0 L W 0% p t 0 0% p t 0% p t 0% p t L W L W 0 L W L W L W q: 00 m /h - l/s l 0, :, m q: 0 m /h - l/s l 0, :,0 m q: 00 m /h - l/s l 0, :, m q: 0 m /h - l/s q: 00 m /h - l/s l 0, :,0 m p t p t 0 p t p t p t L W L W L W 0 L W 0 0 L W 0% p t 0% p t 0% p t L W L W L W L W L W q: 0 m /h - l/s l 0, :, m q: 00 m /h - l/s l 0, :,0 m q: 00 m /h - l/s q: 00 m /h - l/s l 0, :, m l 0, :,0 m p t p t 0 p t p t p t L W L W L W 0 L W L W 0 0% p t 0% p t L W 0 0 L W L W 0 L W L W 0 q: 00 m /h - l/s l 0, :,0 m q: 00 m /h - l/s l 0, :, m q: 00 m /h - l/s l 0, :,0 m l 0, :, m q: 00 m /h - l/s l 0, :,0 m p t p t p t p t p t L W L W L W 0 L W 0 L W 0% p t 0% p t L W L W 0 L W L W L W q: 00 m /h - l/s l 0, :, m q: 00 m /h - l/s l 0, :,0 m q: 00 m /h - l/s l 0, :, m q: 00 m /h - l/s l 0, :,0 m p t p t 0 p t p t p t L W L W L W 0 L W L W 0% p t 0% p t 0% p t L W 0 L W 0 L W L W 0 L W q: 00 m /h - l/s l 0, :,0 m l 0, :, m q: 00 m /h - l/s l 0, :, m q: 00 m /h - l/s l 0, :,0 m q: 00 m /h - l/s l 0, :,0 m p t p t 0 p t p t 0 p t L W L W 0 0 L W 0 L W L W 0% p t 0% p t 0 0% p t 0 L W L W L W L W L W q: 00 m /h - l/s l 0, :,0 m q: 00 m /h - l/s l 0, :, m q: 00 m /h - l/s l 0, :,0 m q: 00 m /h - l/s l 0, :,0 m p t p t p t p t p t L W 0 L W L W L W L W 0% p t 0 0% p t L W L W L W L W L W We reserve the right to make changes without prior notice
Technical data- Supply and exhaust air Dimensioning table with accessories, and B dimension: mm 0,0 m 0,0 m 0,0 m 0,0 m 0,0 m 0, m 0, m q: 00 m /h - l/s l 0, :,0 m q: 0 m /h - l/s l 0, :, m q: 00 m /h - l/s l 0, :, m q: 0 m /h - l/s l 0, :, m q: 00 m /h - l/s l 0, :, m p t p t p t p t p t 0 L W L W L W 0 L W L W 0% p t 0 0 0 0% p t 0% p t 0% p t 0 L W 0 L W L W L W 0 0 L W q: 0 m /h - l/s l 0, :, m q: 00 m /h - l/s l 0, :,0 m q: 00 m /h - l/s q: 00 m /h - l/s l 0, :, m l 0, :,0 m p t p t 0 p t p t p t L W L W L W 0 L W L W 0 0% p t 0% p t L W 0 0 L W L W 0 L W L W 0 q: 00 m /h - l/s l 0, :,0 m q: 00 m /h - l/s l 0, :, m q: 00 m /h - l/s l 0, :,0 m l 0, :, m q: 00 m /h - l/s l 0, :,0 m p t p t p t p t p t L W L W L W 0 L W 0 L W 0% p t 0% p t L W L W 0 L W L W L W q: 00 m /h - l/s l 0, :,0 m q: 00 m /h - l/s l 0, :, m q: 00 m /h - l/s l 0, :, m q: 00 m /h - l/s l 0, : m p t p t p t p t p t 0 L W L W 0 0 0 L W L W L W 0% p t 0 0% p t 0% p t 0% p t 0 L W 0 L W L W 0 L W L W q: 00 m /h - l/s l 0, :,0 m l 0, :, m q: 00 m /h - l/s l 0, :, m q: 00 m /h - l/s l 0, :,0 m q: 00 m /h - l/s l 0, :,0 m p t p t 0 p t p t 0 p t L W L W 0 0 L W 0 L W L W 0% p t 0% p t 0 0% p t 0 L W L W L W L W L W q: 00 m /h - l/s l 0, :,0 m q: 00 m /h - l/s l 0, :,0 m q: 00 m /h - l/s l 0, :,0 m q: 00 m /h - l/s l 0, :,0 m p t p t p t p t p t L W 0 L W L W L W L W 0% p t 0 0% p t L W L W L W L W L W q: 00 m /h - l/s l 0, :, m q: 00 m /h - l/s l 0, :,0 m q: 00 m /h - l/s l 0, :, m q: 00 m /h - l/s l 0, :,0 m q: 0 m /h - l/s l 0, :,0 m p t p t p t p t p t L W L W 0 L W L W L W 0% p t 0% p t 0 0% p t 0% p t L W L W L W L W L W We reserve the right to make changes without prior notice
Technical data-supply and exhaust air Dimensioning table with accessories, og B dimension: mm 0,0 m 0,0 m 0,0 m 0, m 0, m 0, m 0, m q: 00 m /h - l/s l 0, :,0 m q: 00 m /h - l/s l 0, :, m q: 00 m /h - l/s l 0, :,0 m l 0, :, m q: 00 m /h - l/s l 0, :,0 m p t p t p t p t p t L W L W L W 0 L W 0 L W 0% p t 0% p t L W L W 0 L W L W L W q: 00 m /h - l/s l 0, :, m q: 00 m /h - l/s l 0, :,0 m q: 00 m /h - l/s l 0, :, m q: 00 m /h - l/s l 0, :,0 m p t p t 0 p t p t p t L W L W L W 0 L W L W 0% p t 0% p t 0% p t L W 0 L W 0 L W L W 0 L W q: 00 m /h - l/s l 0, :,0 m l 0, :, m q: 00 m /h - l/s l 0, :, m q: 00 m /h - l/s l 0, :,0 m q: 00 m /h - l/s l 0, :,0 m p t p t 0 p t p t 0 p t L W L W 0 0 L W 0 L W L W 0% p t 0% p t 0 0% p t 0 L W L W L W L W L W q: 00 m /h - l/s l 0, :,0 m q: 00 m /h - l/s l 0, :,0 m q: 00 m /h - l/s l 0, :,0 m q: 00 m /h - l/s l 0, :,0 m p t p t p t p t p t L W 0 L W L W L W L W 0% p t 0 0% p t L W L W L W L W L W q: 00 m /h - l/s l 0, :, m q: 00 m /h - l/s l 0, :, m q: 00 m /h - l/s l 0, :,0 m q: 0 m /h - l/s l 0, :,0 m q: 0 m /h - l/s l 0, :,0 m p t p t 0 p t p t 0 0 p t L W 0 L W L W L W L W 0% p t 0% p t 0% p t L W L W L W L W L W q: 00 m /h - l/s l 0, :,0 m q: 00 m /h - l/s l 0, :,0 m q: 0 m /h - l/s l 0, :, m q: 0 m /h - l/s l 0, :,0 m q: 00 m /h - 00 l/s l 0, :,0 m p t p t 0 0 p t p t 0 p t L W 0 L W L W L W L W 0% p t 0% p t 0 0% p t 0 0% p t L W L W L W L W 0 L W q: 00 m /h - l/s l 0, :,0 m q: 0 m /h - l/s l 0, :,0 m q: 0 m /h - l/s l 0, :,0 m q: 00 m /h - 00 l/s l 0, :, m q: 000 m /h - l/s l 0, :,0 m p t p t p t p t p t L W 0 L W L W L W L W 0% p t 0 0% p t 0% p t L W L W L W 0 L W L W 0 0 We reserve the right to make changes without prior notice