GGL Q - Burglary resistant roof window, white-painted or clear lacquered pine wood
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GGU Q - Burglary resistant roof window, white lacquered polyurethane
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GGU --8230 - VELUX INTEGRA® solar passive house roof window, white lacquered polyurethane
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GGL ----40 - Smoke ventilation roof window, white painted or clear lacquered pine wood
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GGU ----40 - Smoke ventilation roof window, white lacquered polyurethane
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GGL H - Conservation roof window, white-painted or clear lacquered pine wood
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GTL - Rescue opening window, white-painted or clear lacquered pine wood
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GTU - Rescue opening, white lacquered polyurethane
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GXL - Side-hung craftsman's roof exit, white-painted or clear lacquered pine wood
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GXU - Side-hung craftsman's roof exit, white lacquered polyurethane
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