Fixed Blade External Louvre Models FBL and FBL 75 Model FBL Aluminium Construction Bird Wire Guard Standard Two Flange Widths 25mm or 44mm Slim 50mm Section Profile Intake or Exhaust Applications Single Section up to 1500mm x 1500mm Model FBL-75 75mm Fixed Blade External Louvre Horizontal Blades Intake or Exhaust Applications Head and Cill Sections alternatives available Fixing Details various methods Bird Guard Mill Aluminium Finish Other Finishes Available Single Section Sizes from 300mm x 300mm to 2500mm x 1500mm
Fixed Blade External Louvre Contents Contents Introduction FBL Performance Nomogram FBL Dimensions FBL Ordering Information FBL Introduction FBL-75A and FBL-75AC Performance Data FBL-75A and FBL-75AC Dimensions FBL-75A and FBL-75AC Ordering Information FBL-75A and FBL-75AC Page 2 Page 3 Page 4 Page 5 Page 6 Page 7 Page 8 Page 9 Page 10 2
Fixed Blade External Louvre Introduction pg. 2 pg. 2 pg. 2 pg. 2 pg. 2 Model FBL fixed horizontal blade external weather louvres with 50mm blade spacing are particularly suitable for smaller intake or exhaust applications, where a balanced appearance is required when installed on external walls. Constructed from extruded aluminium sections with either a cleated or welded frame (subject to size and/or specification). Each louvre is fitted with a bird guard as standard, insect screens also available (please note insect screens will reduce the free area). All flanges are supplied plain un-drilled, as an alternative countersunk screw holes in the flange are also available. Model FBL is supplied as standard with a 25mm wide flange frame, maximum size 1500mm x 1500mm. For continuity of appearance, if you require various sizes from 300mm x 300mm to over 1500 x 1500mm, we would recommend using the FBL-75 to keep all flanges the same. Model FBL-LF is supplied as standard with a larger 44mm wide flange frame. A drip cill may be specified as an optional extra. Finishes available are:- standard mill finish aluminium:- alternatives include polyester powder coating and anodised. (Colour must be specified separately on all orders). FBL 25mm flange FBL 44mm flange 3
4 Fixed Blade External Louvre Model FBL Performance Nomogram - based on fitted with bird mesh
Fixed Blade External Louvre Model FBL Dimensions Minimum nominal size is 150 x 150mm for the FBL and 300 x 300mm for the FBL - LF, up to a maximum single section of FBL 25mm (Standard flange) 1500mm x 1500mm. Where the nominal louvre height is not divisible by 50mm, the blade pitch will be adjusted accordingly. (This may marginally affect the resultant free area). Rear mounted stiffener bars are fitted as standard to louvres over 1000mm width. Cleated frame same as standard. 5 5
Fixed Blade External Louvre Model FBL Ordering Information Example Flange Style Model Fixing Finish Size (W x H) mm 25C FBL F0 0 600 x 600 25C 32mm wide flange, cleated construction (standard Model FBL). 44C 51mm wide flange, cleated construction (standard Model FBL-LF). 25W 32mm wide flange, welded construction (option Model FBL). 44W 51mm wide flange, welded construction (option Model FBL-LF). FBL 50mm horizontal fixed blade external louvre with 25mm flange (standard). FBL LF 50mm horizontal blade external louvre with 44mm wide flange. F0 No fixing. F1 Countersunk screw holes in flange. (For other fixings please refer to JPR Services Sales Office.) T: 0107 871 526 0 Mill finish aluminium. (For other colours or special finishes refer to JPR Services Sales Office.) Model FBL single section: Min size150 wide x 150 high Max size 1500 wide x 1500 high. Model FBL LF: Min size300 wide x 300 high Max size 1500 wide x 1500 high. Notes: If the overall size is critical this must be stated separately on order. Bird Wire guard fitted as standard. Redesign may occur which supersedes the information in this brochure. Please refer to our website for latest information. www.jprservices.co.uk 6
Fixed Blade External Louvre Model FBL - 75A and FBL - 75AC Introduction Model FBL 75 fixed horizontal blade external weather louvres with 75mm blade spacing are particularly suitable for larger intake or exhaust applications, where a clean continuous appearance is required when installed on external walls. Constructed from extruded aluminium sections using a mechanical fixing for frame and blades (subject to size and/or specification). Each louvre is fitted with a bird guard as standard, insect screens are also available. All flanges are supplied plain un-drilled, fixing details are as shown on page 10. Model FBL 75 A is supplied as standard with a 40mm wide flange frame. Size Range Minimum size: 300 W x 300 mm H Maximum size: 2500 W x 1500 mm H or 1500 W x 2500 mm H Model FBL 75 AC is supplied as standard with a flangeless frame for recessed fitting. Finishes available are:- Standard mill finish aluminium, alternatives include polyester powder coating and anodised. (Colour must be specified separately on all orders). Size Range Minimum size: 300 W x 300 mm H Maximum size: 2500 W x 1500 mm H or 1500 W x 2500 mm H 7
Fixed Blade External Louvre Model FBL - 75A and FBL - 75AC Effective Free Area m2 Model FBL 75A and FBL 75AC Effective Free Area m2 Model FBL 75A and FBL 75AC Face Core Free Area in M2 based on 47% free area. (The free areas quoted are typical and on smaller size louvres the free area may be reduced) Note: All figures are for louvre with bird wire guard. All figures shown to the nearest rounded value. Face velocity is total air volume / louvre core area (use these figures in calculations) Air Volume (m3/s) = Free area (m2) x Face Velocity (m/s) 8
Fixed Blade External Louvre Model FBL - 75A and FBL - 75AC Dimensions Minimum nominal size is 300mm x 300mm up to a maximum single section of 2500mm wide x 1500mm high or 1500mm wide x 2500mm high. Where the nominal louvre height is not completely divisible by blade centres, the head blade will comprise a formed section. (This may marginally affect the resultant free area). Rear mounted stiffener bars are fitted as standard to louvres over 1.2m in width. A continuous external appearance is maintained to the louvre blades with stiffener bars fitted to the rear of the blade assembly. Louvre blades are secured to the stiffener bars via aluminium support clips. Dimensional Data Model FBL 75A Dimensional Data Model FBL 75AC 9
Fixed Blade External Louvre Model FBL - 75A and FBL - 75AC Typical Fixing Details 1. Fixing through front flange. 2. Fix through jamb frame front between blade centres. 3. Fix through jamb frame rear. 4. Flat bar lug fixing. 1. Fixing from rear via angle bracket. Special formed fixing brackets can be produced to accommodate almost any condition. 2. Fix through jamb frame front between blade centres. Example Of Ordering Information Flange Style Model Fixing Finish Size (W x H) mm 40C FBL -75A F0 0 600 x 600 40S 40mm wide flange, (standard Model FBL-75A). 00S Flangeless, recessed fit, (standard Model FBL-75AC). FBL 75A 75mm horizontal blade external louvre with 40mm flange (standard). FBL 75AC 75mm horizontal blade external louvre with no flange for recessed fit. 0 Mill finish aluminium. (For other colours or special finishes refer to JPR Services Sales Office.) F0 No fixing. F1 Countersunk screw holes in flange. (For other fixings please refer to JPR Services Sales Office.) T: 0107 871 526 Model FBL -75A and Model FBL-75AC single section: Min size 300 wide x 300 high Max size 2500 wide x 2500 high. Model FBL LF: Min size300 wide x 300 high Max size 1500 wide x 1500 high. Notes: If the overall size is critical this must be stated separately on order. 10