diff --git a/opm/parser/eclipse/EclipseState/Grid/TransMult.hpp b/opm/parser/eclipse/EclipseState/Grid/TransMult.hpp
index f830578f6..7bb0efe88 100644
--- a/opm/parser/eclipse/EclipseState/Grid/TransMult.hpp
+++ b/opm/parser/eclipse/EclipseState/Grid/TransMult.hpp
@@ -47,7 +47,13 @@ namespace Opm {
     class TransMult {
 
     public:
+        TransMult() = default;
         TransMult(const GridDims& dims, const Deck& deck, const FieldPropsManager& fp);
+        TransMult(const std::array<size_t,3>& size,
+                  const std::map<FaceDir::DirEnum, std::vector<double>>& trans,
+                  const std::map<FaceDir::DirEnum, std::string>& names,
+                  const MULTREGTScanner& scanner);
+
         double getMultiplier(size_t globalIndex, FaceDir::DirEnum faceDir) const;
         double getMultiplier(size_t i , size_t j , size_t k, FaceDir::DirEnum faceDir) const;
         double getRegionMultiplier( size_t globalCellIndex1, size_t globalCellIndex2, FaceDir::DirEnum faceDir) const;
@@ -55,6 +61,13 @@ namespace Opm {
         void applyMULTFLT(const FaultCollection& faults);
         void applyMULTFLT(const Fault& fault);
 
+        std::array<size_t,3> getSize() const;
+        const std::map<FaceDir::DirEnum, std::vector<double>>& getTrans() const;
+        const std::map<FaceDir::DirEnum, std::string>& getNames() const;
+        const MULTREGTScanner& getScanner() const;
+
+        bool operator==(const TransMult& data) const;
+
     private:
         size_t getGlobalIndex(size_t i , size_t j , size_t k) const;
         void assertIJK(size_t i , size_t j , size_t k) const;
@@ -62,7 +75,7 @@ namespace Opm {
         bool hasDirectionProperty(FaceDir::DirEnum faceDir) const;
         std::vector<double>& getDirectionProperty(FaceDir::DirEnum faceDir);
 
-        size_t m_nx , m_ny , m_nz;
+        size_t m_nx = 0, m_ny = 0, m_nz = 0;
         std::map<FaceDir::DirEnum , std::vector<double> > m_trans;
         std::map<FaceDir::DirEnum , std::string> m_names;
         MULTREGTScanner m_multregtScanner;
diff --git a/src/opm/parser/eclipse/EclipseState/Grid/TransMult.cpp b/src/opm/parser/eclipse/EclipseState/Grid/TransMult.cpp
index 11f78380b..18a267e87 100644
--- a/src/opm/parser/eclipse/EclipseState/Grid/TransMult.cpp
+++ b/src/opm/parser/eclipse/EclipseState/Grid/TransMult.cpp
@@ -57,6 +57,20 @@ R"(This deck has the MULTREGT keyword located in the EDIT section. Note that:
         }
     }
 
+
+    TransMult::TransMult(const std::array<size_t,3>& size,
+                         const std::map<FaceDir::DirEnum, std::vector<double>>& trans,
+                         const std::map<FaceDir::DirEnum, std::string>& names,
+                         const MULTREGTScanner& scanner) :
+        m_nx(size[0]),
+        m_ny(size[1]),
+        m_nz(size[2]),
+        m_trans(trans),
+        m_names(names),
+        m_multregtScanner(scanner)
+    {
+    }
+
     void TransMult::assertIJK(size_t i , size_t j , size_t k) const {
         if ((i >= m_nx) || (j >= m_ny) || (k >= m_nz))
             throw std::invalid_argument("Invalid ijk");
@@ -137,4 +151,28 @@ R"(This deck has the MULTREGT keyword located in the EDIT section. Note that:
             this->applyMULTFLT(fault);
         }
     }
+
+    std::array<size_t,3> TransMult::getSize() const {
+        return {m_nx, m_ny, m_nz};
+    }
+
+    const std::map<FaceDir::DirEnum, std::vector<double>>& TransMult::getTrans() const {
+        return m_trans;
+    }
+
+    const std::map<FaceDir::DirEnum, std::string>& TransMult::getNames() const {
+        return m_names;
+    }
+
+    const MULTREGTScanner& TransMult::getScanner() const {
+        return m_multregtScanner;
+    }
+
+    bool TransMult::operator==(const TransMult& data) const {
+        return this->getSize() == data.getSize() &&
+               this->getTrans() == data.getTrans() &&
+               this->getNames() == data.getNames() &&
+               this->getScanner() == data.getScanner();
+    }
+
 }