Our BIRCHTREE polytunnel is manufactured using a heavy-duty 19 mm or 25 mm gauge galvanised steel ...Our BIRCHTREE polytunnel is manufactured using a heavy-duty 19 mm or 25 mm gauge galvanised steel tube frame. Please note that only the 25mm frame features a full ground bar set up, diagonal storm bracing bars, two longitudinal roof bars and a nut and bolt construction. Our NEW series also features a super-wide door for the largest of barrows and double doors. If you have a garden or allotment that is slightly exposed to the elements then this is the tunnel we would recommend as it is much more robust and hardy.
Our BIRCHTREE polytunnel is manufactured using a heavy-duty 19 mm or 25 mm gauge galvanised steel tube frame. Please note that only the 25mm frame features a full ground bar set up, diagonal storm bracing bars, two longitudinal roof bars and a nut and bolt construction. Our NEW series also features a super-wide door for the largest of barrows and double doors. If you have a garden or allotment that is slightly exposed to the elements then this is the tunnel we would recommend as it is much more robust and hardy.