Home
Ventilation
Ducting
Ducting - Fixed
GFL 50-30 Counter flange for mounting to the duct system. Galvanised sheet steel. 500mm x 300mm

GFL 50-30 Counter flange for mounting to the duct system. Galvanised sheet steel. 500mm x 300mm

Pricing

Quantity:

£51.67 £62.00

Buy 2 for £50.64 ( £60.77 incl. tax) each and save 2%
Buy 4 for £49.60 ( £59.52 incl. tax) each and save 4%
Buy 6 for £48.57 ( £58.28 incl. tax) each and save 6%
Buy 8 for £47.54 ( £57.05 incl. tax) each and save 8%
Buy 10 for £46.50 ( £55.80 incl. tax) each and save 10%

Overview

GFL 50-30 Counter flange

Product Code: 2707

Details

Used as a flange for mounting to the duct system. Manufactured from galvanised sheet steel. Suitable for rectangular ducts - 0.8kg

Additional Details

Additional Details
Delivery	This item is usually stocked overseas and takes about 2-3 weeks to deliver. If in UK deliverable in 3-4 days. Enquire on 01729 824108
Brand	Systemair
Warranty	1 year manufacturers warranty

Useful Articles

Covid Safe Ventilation Of Buildings

By ventilation, we mean the replacement of stale, and possible contaminated, air with fresh air from outside the building. Although Covid-19 is the current issue, it is the same with any airborne viral contaminant. The air in the building is a potential conduit for infection from the infected to th

Read

06/04/21
Rectangular Duct Standard Sizes and Ancillaries

Rectangular duct is often the ducting format of choice when installation space is tight. Where a volume of air needs to be moved and you have a rectangular hole to duct it through, the rectangular duct is the space effective solution.

Read

11/03/21
Industrial Evaporative Coolers from Master

9th April 2019 - The Master BCF range of industrial evaporative coolers bring greater versatility to the moulded plastic 'one size' evaporative coolers market.

Read

09/04/19

Heat Load	Watts	BTU
Average The Room Is A Normal Residential Room, Office, Reception Area Or Similar, Where There Is Not Overly Crowded With People, Computer And Office Equipment.
Above Average There Are Factors That Contribute To Additional Heat Being Generated In The Room E.G. Strong Lighting, Overcrowding With People And Office Equipment, Conservatory Type Room, Or Flat Roofed Room.
High There Are Factors That Contribute To A High Heat Load In The Room. E.G. Commercial Cooking, Much Computer And Server Equipment, Switchgear, Temporary Building With Thin Walls And Flat Room, Plain Glass Conservatory.

Variable	Units	Notes/Guidance
System Airflow	M3/Hr	If you have it in cfm then multiply your cfm value by 1.7 to get m3/hr
Average Combined Pressure Drop Of Filters Of Higher Than F6 Efficiency	Pascals	F8 bag filters pressure drop - typical clean clean to dirty, 160 - 250 Pascals F9 compact filters pressure drop - typical clean to dirty, 160 - 350 Pascals H10 HEPA filter pressure drop - typical clean to dirty, 250 - 600 Pascals 9.8 Pascals = 1 mm wg, & 249 Pascals = 1 inch wg
Carbon Filters Pressure Drop	Pascals	For compact type carbons pressure drop between 100 - 150 Pa Bonded carbon panels typically 150 - 170 Pa Loose granular carbon panels typically 130 Pa
Annual Operational Hours	Hrs/Annum	8760 hours in a year If operating for 5 days a week, excluding public holidays, for 12 hrs/day = 3000 hrs
Cost Of Power	Pence Per Kwh	Huge variance in what different companies pay. heck your last bill to be sure, otherwise put in 10p
Fan Efficiency	(As Decimal Value, Eg 100%=1)	Would typically be around 60%, so if you don’t have specific information use 0.6
Fan Motor Efficiency	(As Decimal Value, Eg 100%=1)	Larger motors should be around 90%, so if you don’t have specific information use 0.9

The Total Average Pressure Drop Over Your Higher Efficiency Filters And/Or Carbon Filters Is;		Pascals
This Pressure Drop Is Costing In Energy Alone	£	Per year
It Is Probable That A Sanuvox In-Duct System Could Break Down The Biological, Chemical And Odourous Contaminants On This Air Flow For Between 16 And 25% Of This Running Cost	£	Lower energy cost estimate of an equivalent Sanuvox system (16%)
	£	Higher energy cost estimate of an equivalent Sanuvox system (25%)

Type Of Building	Kw Range		BTU Range
Sports Centres
Retail Premises
Office Premises
Small Industrial Unit
Medium Industrial Units
Larger Industrial Buildings
School/Community Halls
Churches

Room/building volume	m3
Temperature differential (deltaT °C)	°C