Size: 215mm x 66mm x 58mm. One Box Contains 20 Air Bricks. Bargain price, One Air Brick Equates to £1.49 each. Free area: 7750mm² (77cm²) per unit. Robust interlocking air brick. One size can form a unit 9×6, 9×9 by interlocking 2 or more etc. Textured finish maintains aesthetic appearance. U.V. stabilised to slow down the effects of sunlight. British Standard BS 493:1995. Free Delivery MAINLAND UK ONLY.
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