Our Gravity grille's are perfect for finishing off any ventilation project. Gravity Grilles will stop the wind from blowing back down the ducting. Easy to clean Features Exterior Plastic Wall Gravity Grille Gravity flaps open (moving air) and close (with gravity) Colour: Brown For 5" and 6" as they have 4 blades 4" 5" or 6" is related to the size of ducting you have (e.g if you have 4" ducting please go for the 4" grille)
Trustpilot
2 weeks ago
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