MFA/UFA/UFK Universal grille for mounting in floors, walls and window sill QUICK FACTS ○ Can be used for both supply and extract air ○ Extremely versatile as it can be tailor made for all needs ○ It is possible to construct unlimited lengths of grille ○ The grille is manufactured in anodised aluminium ○ Standard colour Anodised/electroplated aluminium AIR FLOW - SOUND PRESSURE ROOM (Lp10A) *) Size 6 alternative standard colours (powder coating) Other colours upon request *) Lp10A = Sound pressure incl. A-filter with 4 dB room attenuation and 10 m2 room absorption area. 5 mm slot width sizes are only applicable for MFA and U

Technical descriptionDesign The grille consists of strong aluminium profiles held together by a number of circular tubes and, in one model, an outer frame. The Universal grille is available in three models: MFA is designed for mounting in floors, window sills and walls,and has an outer frame profile that can be selected in three different versions: A, B or C. UFA is designed for floor and window sills installations and does not have a outer frame profile. UFK is designed for mounting in floors and does not have an outer frame profile but is supplied with a frame for cementing to the floor. MFA...

• Sound pressure level dB(A) applies to rooms of 10 m2 equivalent absorption area. • Throw l02 is measured under isothermal conditions. • Throw diagrams apply to plane airstreams, i.e. discharge of air through slots. • Graphs for capacity apply to grilles with a length of 1000 mm. For other lengths, the data is converted to the equivalent of 1000 mm. • Due to the type of construction, the free area for UFK is less than that of UFA or MFA • For the UFK 10, the free area is two slots less. • For the UFK 14, the free area is one slot less. Example: Calculate of the throw 20 l/s is to be discharged...

MFA/UFA/UFK Engineering graphs – MFA, UFA, UFK - Supply air Air flow – Pressure drop – Sound level • Graphs for capacity apply to grilles with a length of 1000 mm. For other lengths, the data is converted to the equivalent of 1000 mm. • The graphs must not be used for commissioning. • The dB(A) values are for rooms with normal acoustic absorption of 4 dB. • The dB(C) value is normally 6-9 dB’s higher than the dB(A) value. Swegon reserves the right to alter specifications.

Dimensions and weight The UNIVERSAL GRILLE has the following dimensions: Length: As desired from 200 mm to 2000 mm in one and the same unit. Height: See the table below. This dimension depends on the number of slots. Grilles with heights exceeding 200 mm are not recommended for installation in floors. Grilles with 5 mm gap between blades No. of Hole cutting size: MFA: H + 8 mm x L + 5 mm. UFA, UFK: H + 8 mm x L + 2 mm. Hole cutting size: MFA: H + 8 mm x L + 5 mm. UFA, UFK: H + 8 mm x L + 2 mm. Grilles with 14 mm gap between blades No. of Hole cutting size: MFA: H + 8 mm x L + 5 mm. UFA, UFK:...

Universal Grille MFA b -bb -cc -dddd -e -f -g Version: Slot width (space between blades): Grille height: For number of slots, see table Specification example Swegons rectangular UNIVERSAL GRILLE of the type MFA, having the following functions: • Fixed blades • Manufactured in anodised aluminium Size: MFAb bb - cc - dddd -e - f- g xx items Wall/ window duct mounting: 0 Floor mounting: 1 Flange type: A, B, C (Only for MFA) Now screw holes in flange -0 Screw holes in flange -1 (Only for MFA) Swegon reserves the right to alter specifications. 20211123