Available in a range of sizes the domes are available with double, triple or quadruple glazing.
Manufactured with a double layer GRP (Glass Reinforced Plastic) with polyurethane insulation, the upstands are compatible with all popular flat roofing membrane systems. All sizes listed are the structural opening sizes/internal sizes.
GRP Upstand Specification
Please note: Controllable background ventilation is not available in the Circular Range. Background ventilation is by means of Permanent ventilation only.
If you are not satisfied with any LB Supplies products you can return them within 14 days of purchase as long as they are unused and in their original condition and packaging. If you purchased from our website and would like to return your products, please download the LB Supplies returns form below and include it with the return. Once we′ve received your unused products, we′ll refund you the amount of the original purchase, excluding any delivery costs, using your initial method of payment. Some products may incur restocking charges. For all returns and any exchanges, you are required to cover the cost of the return delivery to our offices. For your own security, we recommend using a recorded delivery service when sending goods to us.
Click here for a product returns form.